he 100% had some prior shit going on, im perma as well. played for years, had every champ a lot of skins. i actually was VERY toxic back in the dasy and had a 2000 game chat restriction. that was 2-3 years ago. last year i had some minor restrictions.. this year however... had a bad day and flamed a bit: 2 week ban... 3 months and like 200 games later i stopped smoking and had another bad day: permaban.
to be fair i was most likely reported quite a few out of the 200 other games by maybe a player or two after not putting up with their bullshit or getting too emotional when people group mid for the 4th time when mid inhib is already down and we couldnt finish the 3 times before... but whatever
To me it looks like they found out, that it is more lucrative to ban players because they are kind of addicted by now and will spend a lot of money on their new account.
Why on earth would they stop the "you have been reported, everyone has bad days but be chill" messages after a toxic game that got you reported? They want you to get banned.
If you think about it a bit, for the whole community its actually not just positive, silver/gold is INFESTED with banned smurfs which makes it a pain for casual players.