This is what I need a "Confused" emote for.
I'd definitely use it, just 'cuz I'm uber-lazy and don't wanna keep pressing buttons to stay above water.
You kinda have to go out of your way to encounter Lava once Hardmode starts, so unless Relogic makes the Underworld relevant then (which they DO seem to be doing), the Lava Waders only have a chance to shine with the occasional pool of water or honey, which... isn't a lot, especially if you're not as lazy as I am and are willing to use better items (which, I'm just GUESSING, more people are than aren't).