I'm not sure I would put the blame on those three...anyone behind them could have passed and made it in plenty of time. Sainz actually made it on to the final lap, so he technically did nothing wrong.
Apparently those three admitted the charge of going slowly to impede other people's laps, so the stewards didn't have much choice, since the other six, at least, were only going slowly in the hope of benefitting themselves (or, in at least one and probably some other cases, to benefit themselves and their team-mate). That they only got reprimands makes me think nobody would have got a penalty of any description if everyone had simply said, "Well, we thought this was the best way to get a good lap for ourselves and we were obviously wrong..."
But I don't understand why there aren't more complaints about the incident where Leclerc cut the chicane and the changed position at least twice in the run up to the next corner. Surely cutting the chicane should have meant he had to let Hamilton past. But then going on to weave all over the track is clearly against the rules.
I was in an unhappy household on Sunday for precisely this reason. Specifically, because Leclerc had a black-and-white flag. I suspect a lot of the people on Twitter and Tumblr have forgotten what, exactly, a black-and-white flag means. Maybe the stewards had too, for it had been written on the flag's introduction last week that they were still experimenting on how the black-and-white flag was to be interpreted.
I'm sure nobody here needs to be told that a black-and-white flag is a warning flag, and means "any further offences will attract a sporting penalty". I have to admit that I wasn't sure a penalty (even of the black-and-white flag variety) was warranted for the original incident given precedent, but he was given one and even a 5-second time penalty (for monty would probably advocate) would have been within precedent. And unlike the 5-second penalty, a black-and-white flag necessarily affects how future incidents are seen, including ones that aren't the same type of offence. Which means that incidents that normally would be noted and only brought into play if accumulated suddenly become penalty-worthy.
Which was exactly what we all expected to happen here. A single bout of weaving or chicane-skipping would not, in isolation be a penalty. Either (let alone both), following a black-and-white flag, would be a penalty in any other series (except one that specifies separate penalty-counting systems for different types of offence), and would have been a penalty in the previous system of black-and-white flag usage in F1. Even a token 5-second penalty for weaving would have worked (given the weaving, the "let Hamilton pass and carry on" option wasn't available, for the same reason that investigating Vettel for dangerous rejoining in Canada prevented it), and with the speed of the hard tyres, I think Leclerc might have won the race anyway. Which would have pleased everyone in my house, and probably got the stewards off the hook if they were worried about the home crowd villifying them afterwards.
But that's not how it was handled. Instead, the whole thing got swept under the carpet - which is exactly what a black-and-white flag is supposed to prevent, in instances where it doesn't turn the recipient into a model driver for the rest of the race (and even Charles admitted he'd made errors post-race).
The kicker was when they announced a (quickly dropped) investigation for a "missed apex". I had no idea they did understatement-based humour in Italy, since to me it seemed like Leclerc missed the first chicane's apex by half a postcode...
Which is why, even though I'm happy my favourite driver got the experience he had at the end of the race, part of me still feels like Bottas won Monza fair and square.
It was a good F1 race. Monza certainly puts on a good stage, and the players stepped up.
Monza and Spa both show you don't need 'tight twisty bits' to put on a good race.
You are absolutely right