Again, if the issues were mechanical, I'd be a lot more sympathetic. But, they aren't. Not really. The issue is that some folks want to play gatekeeper over the game and force their tastes on everyone else.
To me it seems the name of the class implies something else than just a martial buffer on the heads of some people (myself included). And that seems to have a significant impact on their acceptability of the class (not necessarily my case here, as I can just ignore the name). Giving the class another name, I don't know, combat tactician maybe, and letting the ones that actually accomplish something (probably at higher levels, but not necessarily) claim the title of warlord might (or might not, I can be completely wrong) go a long way improving its acceptability to some that currently advocate against them.