I kind of agree. Damn, I've seen so many people on here saying things to me they wouldn't say IRL.
I hate to think that nearly everyone is just cowering behind the computer screen (although this happens), but it's also an artificial sort of socializing--quiet people can come off looking talkative and long-winded, etc. This isn't real socializing, so we are bound to "vibe" differently than we are.
Yeah, I've given up on typing people online exactly for the reasons we're both mentioning. It's NOT real interaction, and we can present ourselves as anything we want. You're absolutely right.
In my own case, I swear to God my mind works the same online as it does IRL, but you have to get to know me before you see that side of me. Plus, words sometimes come out of my mouth differently than they sound when I think them (I mean, I would never say "Oh my goodness", but I've typed it a few times), then different individuals will read an interpret my words slightly differently...of course our doppelgangers come out online.
Also,
FWIW, I've been told I come across as a 6, 7, 1, 9, or occasionally 8 online (though the 8 is disputable to many because I don't waste much time with online arguments). IRL, most people (my own family) seemed to think I was a 4 or 5 when I showed them years ago. They'd never figure me for a 9. Go figure out those discrepancies. Those who find me plain-spoken, interesting, and chatty online would be taken aback by how withdrawn, asocial, and non-participatory I am upon first meeting IRL.
I swear, though, I am still the same person inside my head.