I somewhat agree, but consider this, by the way I'm just taking a guess at what it might be.
Right now I'm ranked B1, though I finished Silver 3 last year. So as I went through placements and began climbing through B1 My MMR kept placing me with Mid Silver players. Until I started facing Silver 2's and occasional 1's. Both teams had a mix bronzies between B4 and B1. As I started to lose some of those games I'm seeing a more fair mix in my matches, say between Bronze 2 to Silver 4, I mean I don't like it, but I think it will even out soon. On one hand it feels good that my MMR is possibly high, but bad because both team are saddled with players that shouldn't be in the match.
Like I get maybe a Bronze 2 and 1 in a Silver 5 or 4 match, but a bronze 3 and below? I'd imagine there is the same frustration all the way up the ladder.
I'm curious if it will continue to smooth out as I play more, like all players are b1 etc.
Have you already played a lot of games so far? I'm about 55 games in and the first time in all seasons (except the first) I'm sitting below a 50% win rate. Typically my win rate is around the 54-56%. I'm hoping it's just because it's early in the season, otherwise they have changed ranked for the worse. I suppose time will tell.
I think the biggest offense that Riot makes with these matches is placing brand new players with veteran players.
What I mean by that is, in my first round of promos to get back into Silver, one of the matches I had a player who was rank 32, took Ash mid vs a vlad and went 0-8. A player like this should never be in a game like that. I have a problem with how brand new accounts are given enough MMR to be matched in B1? That player should be down in the dregs of B5 or I5. Not in my Silver promos.