I suppose the question to be asked is what actually have the Houthis/Ansarullah done that "helps" the Palestinians, as is their claim? If they haven't helped Palestinians, have they actually - whether inadvertently or not - actually harmed their cause?
Hamas didn't ultimately help the Palestinians, even by being able to (even though it was a stunning and headline grabbing execution) move and briefly hold territory several years ago. What was the point of it all?
All we got was flattened Palestinian cities and an entire people left to mourn. Not to mention a sequence of events that brought us to this point.
Ansarullah are no different - the rank and file mean well and are undoubtedly heroic and want to grab headlines, but without the backing of a homeland and a functional nation state (and "backing" from afar, e.g. Iran, doesn't count), they can achieve nothing of permanence outside of Yemen. It is folly for them to take their dispute outside of Yemeni lands and pretend they are here to liberate Palestine - indeed, it will only bring further destruction upon those people they claim to help.
Their leaders are idiots, at best, and have meandered into a trap laid for them by Zionists. Just as Hamas did. Just as Hezb did.
Iran needs to realise that these folks are behaving similarly to the Pashtun supremacist organisation lying to their east and that ultimately, their recklessness is a problem. Moreover, the strategy of supporting irregular forces without security of logistics never succeeds - Iranian proxies have simply not delivered.