Does Valve actually do anything with reports? A case study of a man that has (admiting and enjoyed) greifed his last 12 games IN A ROW

So, had a game with a guy who griefed the other day, and I reported him. Got a little bored at work and decided to check in on him and see if my report did anything

After my investigation, I was genuienly shocked to find out that not only was my experience not a one off, but this guy legit greifs nearly every single game he's in. In-fact, he has (as of time of writing) greifed 12 games IN A ROW.

Here is what spurred my investigation where this guy walked to lane, pretended to be afk, then went in spawn and made nazi symbols for the rest of the game (33054223) and told people he had been "doin it for months"

Going into my investigation, I found that he was not lying lmao. Here's a few examples JUST FROM THE LAST 24 HOURS

33051879 : gets his first orb denied, goes back to spawn and then afks while periodically shooting so he doesnt abandon. entire team discusses reporting him and all comit to it, as well as the enemy team

33052408: gets ganked by a enemy haze at 2 minutes, dies and then shoots orbs in spawn for 20 minutes

33052980: nothing went wrong, just hopped off the line at :20 and afk orb shot in base for 12 minutes. Then runs mid and dies to mid boss over and over again

33052408: pops off the line at :10 seconds and spends the remainder of the 23 minute match drawing swastikas for 20 minutes strait until they switch the N word for 12 more mintues (HIS TEAM ACTUALLY WON)

I could keep going but I’ll just save you the game by game breakdown. This guy has griefed 18 games in the last 3 days, and indeed it goes back months

So…do reports really do anything? I am only bringing this up cause I love this game, and I come from dota where you can see in real time the effects of at least voice comms reports and behavior score points. I just want the game to get better and get bad actors out. What do you guys think?