True, but I'm sure that not a few of Bruce's allies think the same thing without being hypocrites - i.e. that a man of his genius and abilities and resources could do so much more for the world (and Gotham) instead of spending billions on Bat-toys and spending much of his time in a cave. It's just that his friends and family usually won't say it to him. This is not to say Bruce is not a huge philanthropist in his "Bruce Wayne" persona but I'm sure someone with his brains could be a major world figure without having to resort to making Thomas and Martha's legacy (in most people's eyes) a wastrel, a playboy and a fop. To become the Batman, he has made Bruce Wayne a joke - which does no credit to his parents (Batman: TAS actually did better job than the comics- its Bruce was a playboy but also recognized as a competent businessman).
Of course it all depends on who's writing Batman. Some writers actual write "Bruce Wayne" as someone of substance (Ed Brubaker did this in Catwoman) but most just play it up as his true "mask".