Ok first, we agree that pred's shouldn't be in plat lobbies, but the issue is there isn't enough players right now in the game. The vast majority of Apex Legends players are on console. The reason how I know this is duo q's are instant on console, ranked q's are instant on console, where as you can't even get into a duo match on pc, and ranked q's are 2-3 minutes in gold.
I'm assuming respawn is trying to fix this issue by adding in crossplay, which will be a good thing for the game.
As far as your opinions on cheating, when I get killed by a player that has good aim, I try to get better, and when you get killed by a player that has good aim, you call him a cheater. It's two ways of looking at a problem, one is productive, and one isn't. I'm not sure what rank you are, but I was plat 1 in my first season in just 300 hours played (my first fps game ever.) FPS games have been out for a very long time, and if you think that the average player has 15-20% accuracy you are trippin'.
You must understand that most players that play a game nowadays use tools to improve there gameplay, such as aim trainers. Every single person I play with uses them, and every friend I know that cares about fps games, uses them. Just sit in the practice range and learn the recoils from guns and you'll be lazering people at 300m in no time. There is a Korean youtuber named "aka" that has a very good video on ways to improve your aim.
A lot of players probably use anti-recoil cheats on there controllers, and that's almost undetectable. but it really isn't that much of an edge if you just learn the patterns yourself.
Going to stop responding to this thread for a bit, since you seem to have a very hard head, and don't really care to improve yourself though, GL to you!