This is your original post masterfully summed up.
Precisely what I said in the first place.
Not" I've seen them being used interchangeably. ". I have watched their use branch and grow into what you call "definitions" now. Sure they might mean all that gobbledygook up there now because people have decided there's a difference, but in the way back when machine, that stuff is all the same and getting worked up over someone using the wrong "newb-nub-noob-n00b" and then comparing it to their-there-they're is pretty ridiculous.
Everyday someone takes a normal word and decides it means something else.
Ratchet
Drip
Bad
Cool
Sure.. language evolves. This doesn't mean though that people are using things "wrong". They're just working on their particular regions or circles definition. You wanna argue whether something is coke or pop or soda or sodapop or whatever.. I guess go ahead, but telling everyone else they're "wrong"is pretty pompous.