Agree with everything here (particularly the Senna, but 15 years younger point!) except for one: I think what MM did this weekend, showing unflinching recklessness (even after he had punted Aleix and almost punted Rabat) was worse than what Rossi did to Sete at Jerez (last corner, last lap, Sete arguably had the opportunity not to turn in and would've run wide and VR would've run off), but MM has been much worse throughout his career.
If we mention VR on Sete, then MM did something almost identical to Lorenzo.
If we mention VR on Casey, then MM did worse to Corsi (in FP, in the dry!).
MM had some blame for Sepang 15.
What MM did to Wilairot was disgraceful. He also took Pol out at Catalunya in 2012, sent Luthi off at Qatar in 2012, took Dani out in 2013, almost took out the track marshals at Silverstone, took out AEspargaro this weekend, took out VR this weekend, took out Bautista in 2015 at Qatar, etc.
I'm sure I can find more examples if I give it even a little more thought (e.g. he was sent to the back of the grid at Valencia 2012 for some reason too).
There's no comparison if one compares the misdeeds of one rider versus the other, but I think Dorna encouraged this when they let Rossi's move at Jerez go, for example.