I still play 10-15 matches a day on PC without a problem and so do my friends.
Honestly, it's the same for me on X1. The Perfect Dark's post is pretty melodramatic.
Matchmaking, more often than not, works fine for me. I'm saying 8-9 times out of 10. Ranked and Casual.
It can still take a little while, but usually not more than 3 minutes, and that's usually when there are four of us and trying to find one (which Ubi has acknowledged as something they're working on).
Don't know what he's talking about with long load times. They're fine--same as they've been for the past month.
Team killers--well, welcome to games with friendly fire on.
"Patches that make things worse"--yup, we officially have a grand total of one patch that made things, overall, worse, even as it brought a lot of other improvements. The patches prior were all improvements over the last ones.
For me, the biggest annoyance right now is the Kapkan glitch and other exploits. I've run into the wonky headshot hitboxes a few times, too, but some people on reddit think it may be a stealth nerf to headshots (they have zero evidence for this, of course).
EDIT: Oh yeah, black Jesus is a pain...apparently. I've only played for about 4-5 hours since the patch/update last week, but haven't run into it yet.