In my personal opinion (my view, obviously not the NHL's) Todd Bertuzzi should have never been allowed to play again. Same with McSorley. Same with Veleno.
If you go into the rink and perform a deliberate act that would at least in the US give you a multiyear prison sentence for assault I don't see why you should be allowed a second chance.
Veleno's stomp was also in my view worse than Simon's, it was completely unprovoked whereas Simon had been agitated by Ruutu (which is of course no excuse either).
And Veleno has a pattern of doing this in international play, including a previous suspension for a head butt. https://www.iihf.com/en/events/2020/wm20/news/17029/veleno-suspended
He fails in the NHL and then tries to be a big boy internationally when he doesn't have to risk getting punched in the mouth. I have zero respect for the loser and - personally - think the NHL and hockey would be better off without him.