Yeah there's been a massive shift. Used to just be pop a server list, join a server with players and reasonable latency. Pop in, play some rounds until you get your fill, and pop out. If someone was causing trouble, like cheating, the server admin would just give them the boot.

Now everything is ranked and matchmaking. Losing blemishes your profile and more take things seriously. Starting a ranked match is a commitment and you are punished for abandoning. You might get stuck playing with a cheater, and you're punished for voting to kick/boot too often even if it's warranted and not rage/toxicity. There's still casual and unranked, but it's not what most people play and has fallen out of fashion.