The success of DW has launched a whole strand of similar stuff: Robin Hood, Merlin. plus Torchwood and SJA. The BBC is heading down a route of quite samey programming, just as it got a bit too obsessed with gritty detective stuff (Silent Witness etc), a few years back.
Success breeds imitation. To some extent, Trevor Eve is right.
Just as DW's success caused a splurge of fantasy/sci-fi stuff, and also brought the "family viewing" idea back onto TV for the first time in years, other past successes have spawned derivatives (Big Brother leading to all the other reality shows, Pop Idol leading to all the other talent shows, a huge glut of makeover programmes at the start of the century).
I don't think it's a "bitter attack", anymore than it's bitter for women of "a certain age" to state that there aren't any roles for them on TV at the moment.