IIRC there were two criticisms of Flights'n'Tights. One was the invalid "ew, gay superheroes!" one. The other was calling out the "we're inclusive" thing paired with the "no girls!" thing juxtaposed with it. That latter one is valid, IMO.
Oh man, I remember that one! That was an... interesting read, if in an arena of MU*s I'm not as familiar with.
I have tried 4 different MU clients on my iphone. MUDrammer is hands down the best. Like, way way way better than the others, which have some really redonkulous stuff, like constantly sending y+accent, or not allowing you to recall what you've already sent.