When it's being ridden like that you can't really say it's crap for tgs, if anything it favours that more than proper street riding, just because it's not a stretch limo doesn't mean it's gonna bunnyhop nicely, it's still a modern frame with a decent height bb and a pretty steep head angle, all aimed at back wheel moves. My only experience is of the old old white ones, so link us to the bike in question.
edit = Just read you put it's a phase which is a pretty modern one, don't be put off by the reputation of the old ones, they're nothing alike, they're decent frames for pennies.