I personally do. My intention is to play so I put gear on first so if I get dropped into a game I'm prepared. I almost prefer to get dropped into a in-progress game than lobby most of the time. I would rather not know what everyone is using or lack there of. I would rather not know how bad or good my team appears, I will figure it out on the fly. I don't pug platinum so I'm speaking from a gold or lower difficulty point of view. I'm interested in hearing your replies!
Unfortunately, you are addressing the wrong crowd (maxed out consumables(255), 25 million credits, et al) and I'd say there's is lack of a medium to address the real culprits(unless you have a mic but why bother). I host my own game most of the time(typical White/Cerberus/Gold) and I can say categorically that most PUGS don't come with consumables due to the fact that when they go down, they don't get up "at all" unless you revive them, then they go down again. So now I just ignore and do my thing unless it's someone I recognise from before(who probably makes an effort). Then missiles, at a point I thought probably the store stopped giving missiles but not if you get a jumbo pack. I have been guilty once or twice of starting a game without missiles but that was just an omission on my part by not realising I had run out of missiles.
Anyway, lately I don't even care anymore if I really want to finish a game then I use my solo expert (DI) otherwise just have some fun and all go down together... whatever! we can all get comfy on the ground and bleed out...