You are aware you are posting in a 3 months old thread, right? You likely won't get a reply by Tantram.
unless Tantram is dead i see no reason why (s)he wouldn't. the thread's age shouldn't be an issue when adressing a rioter
If you are asking of examples of how people lash out without being able to chat:
Ping-spam, trolling, afk-farming, intentionally feeding, the whole program pretty much.
this one
Ping-spam,
ping spam is annoying but it can be muted if you haven't noticed.
i don't know how much a tilted player can spam pings but from my experience, trolls tend to stop trolling after a time if nobody appears to care about the tantrum. ive had a match or two where someone did that (back when pings couldnt be muted)and they eventually stopped soon after i stopped acknowledging them and reacting to the constant pinging.
trolls feed on attention, much like bullies. ignore them and they go away!
trolling,
trolls will troll regardless if they are chat restricted or not so that's neither here nor there
afk-farming,
basically every low elo Nasus(or top laner who takes tp just to get back to lane) ever does this. i know a top lane main in gold who does this every day while streaming it and he isn't banned in any way.
intentionally feeding,
i'm sitting here hoping you'll eventually provide a valid reason why permanent chat restriction is a bad ideea and your arguments so far are not related to flamers in any way, shape or form
the whole program pretty much.
i'm pretty much not convinced so far
[sg-soraka]
When they tried out only punishing people with scaling chat restrictions this exact thing happened with the typical repeat offenders which are now punished with a permaban on the fourth strike.
except they did that in 2012, aka 5 years ago
they should try it again!
i'd like to think that they aren't ignorant enough to base their assessment of today's player base on a 5 year old survey