In my opinion the fact that someone is offended or irritated to see it so much that they go to the trouble of complaining about it shows what unfortunately the majority (not that I know of course but I'm guessing it would be safe to say the majority on the whole) of society still thinks about gay and/or bisexual people.
As many people have pointed out, it's highly unlikely (ok we do have to say not impossible, but it's fair to say highly unlikely) that this person and many others would be offended in the same way by a straight couple kissing, so that in itself shows that whether the person/people think they are homophobic or not, they are at the least very closed minded and unaccepting of it...otherwise it would be a non-issue.
I am a fan of Doctor Who and did mean to catch Torchwood out of interest but actually haven't seen any of it. The reason being because I missed the early episodes and didn't want to start partway in and miss anything important. I may catch up with it if I get the opportunity to see it from the beginning of Season 1 but we'll see. Overall though I can't say this does or would bother me any.
I think part of the problem is that it's so held back in the majority of television and maybe to a smaller degree in films, that for the most part gay and bisexual people are still thrown in very rarely as a token character or they are displayed as someone having a real struggle with their sexuality and in the context of the rest of the show where 99% of people are straight, it's easy to fall into the category as "out of the norm" even if that's not entirely what was intended.
For those reasons I think it's definitely a good thing that people are willing to take risks if you want to put it that way (it shouldn't be risk taking, but because it's not very prominent on TV then it can be viewed that way) in order to open people's eyes and show them that it isn't anything that's "not normal" or anything to be ashamed of and has every right to be on the exact same level as any straight sex. I think there is potential though to use that reason to fall into the trap of having too much, and that might be involved in this thread to a degree going off the posts. I think there's a fine line between opening people's eyes and going too far into shock value or not portraying things very realistically (if that's the right word) in order to hammer a point home where it really only needs to be stated. It can come across as overkill which can even end up diluting the original point and harming it more than helping. I think that seems to be the problem here for some people. Truthfully I can't comment on that as I haven't seen the show to have an opinion on that part.
The other thing I noticed was all about the certain words that people aren't meant to say etc. I think society has become far too PC these days and even though it certainly isn't right to go around offending people and not caring, it's definitely becoming too much of a society where you can't say this and you can't say that and free speech has gone out of the window. It's become so over-PC that you can't even say simple things about inanimate objects that have nothing in the slightetst to do with race (just as an example) like how a blackboard is apparently not a blackboard anymore but a chalkboard? Who came up with that completley ludicrous situation? The board is black, just like it could be red, blue, green, white or bloody multi-coloured. I don't see how saying a blackboard which is infact black has anything to do with being racist and offending a person who happens to have black skin??? Are we one day going to eradicate the colours white, black, brown and any other just because people have that colour skin? Why?
I went a little off the point there, but what I meant to say was in this now over-PC state I don't think anyone has the right to say "you CAN'T say that" because every person has the right to say whatever the hell they want. That's what free speech is, and we should never lose that. The point is sure that doesn't mean it's right to deliberately offend people, and people have every right to say they are offended by something, but it isn't right to say people aren't entitled to say words or what they think. They have that right even if you think it's wrong. It also all depends on the context that they are said in. If someone is saying it in a deliberate attempt to be abusive then that's one thing and that should encourage being banned if we're talking online as an example, but someone using those words who is not intending to be that way should not be silenced. You can disagree and point out it offends you if you wish but should not attempt to say "you CAN'T say that" it just encourages the people that want to have us lose all our rights and end free speech once and for all.