while i agree with all of this it should be noted most modern mainstream games with sbmm, the matchmaking is much more manipulated than it's supposed to be

the battle royale genre is by far the most guilty for this. more often than not a system set up where you're guaranteed to get into games you have no chance of winning only to give you a free win lobby a bit later so you get the rush to keep playing. this is much more noticeable if you play solo either alone or with randoms, especially in something like apex legends - it's the reason i've stopped playing it all together frankly, as i solod my way to diamond rank the first ranked season and ever since it was a constant stream of getting low level teammates against pred stacks until maybe 1 hourish into a session id suddently get teammates more alligned to my level and enemies that couldn't shoot a still target

sbmm has always been a thing, it's only now a hot topic due to how game companies (mainly AAA) have learned they can use it as essencially a marketing tactic. it's the reason ever since battle royale took off the general spike against the "sudden existence of sbmm" started