Well, there are always two strands at hand in any public issue discussion. The issue of the specifics of the solution - in this case that wealth taxes are finickity and often lead to unforeseen issues - and the entirely seperate matter of whether the issue (of wealth inequality) is worth doing something about in the first place.
Exactly, wealth inequality, and in particular, wealth stagnation (actually more like decline) except for those on the very top, is a real problem - almost a toxic problem. And how to address it intelligently, rather than counterproductively, is a challenge. I keep harping on reforming low income zip code schools as ground zero on this for the long term, because I believe that is where the rubber meets the road. There is almost no issue that animates me more - none.