Yeah, even in AD&D the max press for Strength was only 480 lb., which made no sense to me since the established world-record at that point was over 500 lb.
The limitations never bothered me (still down) because I know (for humans anyway) they are based in reality. I won't say more than that about it, though.
As for other races, which have no "reality", PCs could be as limited or not as the game designers intended. In that sense, FWIW, I have no issue if a table plays RAW with no limits on STR-carry weight based on race or sex because it is a fantasy world so maybe the "humans" in your world have a slightly different make-up than humans in the real world? Personally, I don't like to play that way, but others of course and do as they please and will get no argument from me (maybe a discussion, but no argument).
Yes, two-weapon fighting was brutal in 2E if you built for it, especially after the splat-book surge and the CFH came out.