@apostolateofDOOM  I'm inclined to think it's the latter to be honest.
Punishing solo players is essentially punishing the majority of your playerbase, which is counterproductive to say the least.
I think people have been put off ranked this season due to things such as the NoReg issues we had at the start of the season and the random server screws happening where you get continuously rubberbanded. Which all impacted the game at a point where ranked is usually at it's busiest.
So there are probably a lot less people playing at the upper echelons of ranked at the moment dur to starting later hence the weird matchmaking we're seeing.