1. I was on Runscape in the early 2000s. There was no Twitter, Facebook was very new and not really that popular, and nothing else existed. Like, I think Gaia was one of the more popular forums I knew of lol. That meant that Runescape was actually a highly social experience - it's insane the kinds of relationships I built as a 14-18 year old who played the game somewhat obsessively. Staying up all night, meeting strangers. Not actually "playing" the game - like, that was something to do for fun, but so much of it was hanging out with people.
With social media I get a lot of that from other sites. And in general I don't need it as much as I'm not staying up until 4am anymore lol but man it was something else to socialize through a "forum" like Runescape. Even the organic fact that people could "overhear" your conversations just because they were near you in the game led to so many funny "meet cutes", for lack of a better term.
2. The other side of social media influence is that there's a lot more flexing, memeing, and appealing to masses. When I played Runescape it was like... a shameful thing lol, I literally told almost no one at school, and when it came up it was kind of a secret between the few kids who played. It was lame, period , and we did not want to be thought of as lame. No way in hell would I have been posting online about it, nor was there any place to post about it like Reddit - you either posted on the RS boards (probably not tho), or in your clan's custom forum that someone set up.
But now, re (2), there's a lot more room to posture. You can brag way more about your 99s, show them off, show off what you're doing etc. And I think that probably leads to a lot more of the 'grind', which, again (1) was not the point. The point was to run through the wild with your friends at 4am and get scared when pkers came after you and you'd lose a bunch of your shit but who cares. The money we made was genuinely just to fuel those good times. No one actually thought they were going to be the next Zezima - I say this as someone who had multiple 99s, it was mostly just for fun. And it's interesting that you bring up the capes - all of my 99s were after the capes, they were definitely a part of the ceremony.
Viewing RS as a game with an "endgame" or as a game where the points matter is just sort of baffling to me and it's a bit of a shame to me that that's where it apparently has gone.