The reasons people are raging against Hamilton:
1. The lack of consequence for eliminating your rival from the race and gaining 32 points in the standings by doing so. A complete farce penalty that had no bearing on the offenders race.
2. Free repairs after causing a collision enabling the offender to keep his position when he should have been in the pits and last.
3. The celebration like he had won the WDC when he won because of an incident he was deemed guilty of causing
4. The actual incident.
If the FIA had given Lewis a proper penalty he would have finished like 7th to 10th or so and still gained a few points on Max, but the real outrage would have been avoided since FIA had signaled its NOT OK and you cant benefit greatly from taking out your main rival!
So basicly 4 things that are clearly wrong, the incident, the red flag saving repairs, the lack of sufficient penalty and the celebration.
Had the FIA sanctioned Hamilton properly, the repair issue and celebration issue would have been eleminated. I could have lived with the incident, if the proper penatly had been assessed.
Hamilton basicly erased Max excellent driving this year by making a mistake running into Max, I dont see how anybody can argue that is good for the sport.
Red Bull will have change engine and gearbox etc as well which could further decide the championship.
Final note: Its possible that Lewis is getting more abuse than he should have because of the insanity of the regulations.