I think the collective DS memory of annoyance at Lisa's sustained overmarking last year is clouding reality and causing some people to lose their sense of perspective.
She's one part of the tour, not the whole tour. She does have presenting experience (You've Been Framed) so she's not "just a soap actress". People who have seen her in Strictly Confidential have said she's fine and not as OTT as she seemed on the show last year.
If you don't rate the quality of dancers likely to be involved, or you've seen her in S. Confidential and didn't like her presenting style, fair enough. No one is holding a gun to your head to buy tickets. But she's not the Antichrist (that's Widdy, obviously

) and acting like she's personally stamped on your kittens due to a memory of her behaviour in a situation where she was almost certainly being egged on by the producers to project her persona even more than usual, to the extent of not buying tickets to a show you were looking forward to is cutting off your nose to spite your face.
And yes, some of the comments about her weight and appearance are OTT and uncalled for.
And I say all that as someone who never voted for Lisa and was happy to see her leave - but she hasn't ruined the programme and all its spin-offs for all time, no matter how melodramatically some people would like to believe otherwise.