I do not think that Valtteri should be blamed for everything in the last race, yet the chosen strategy of delaying the pit stop played a big role here, when the tire of the car could no longer withstand the load.
I think the strategy was a consequence of his poor position, which was his own fault. He was stuck behind a lot of cars, has a fast car, but isn't any good at overtaking. Best strategy is probably a one-stop, so that he can overtake everyone as they pit... but of course it didn't work here.
Max still remains at the head of the championship, but his chances no longer look as confident as they seemed until recently
I think that extra fastest lap point could prove crucial, especially given what has happened so far this season. Mercedes are expected to dominate on the next track, and Hamilton will also bring his new Brazil engine back for this race. Bottas is useless, so we might expect Hamilton first and Verstappen second. There is almost zero chance of Hamilton getting fastest lap, as Perez would just pit and take it back off him... in which case we might expect to see Verstappen leading by a single point, going into the final race... in which case, what's the chance of an "I was just racing hard!" incident where Verstappen 'accidentally' crashes into Hamilton, and forces them both to DNF... giving Max the title by one point.
Not saying it
will happen this way, but it's not particularly unlikely, either. Championships have been decided this way before, back in the Schumacher era, so it's hardly unprecedented.
What I hope for is just fair racing from everyone.