Im not too sure how champion token work, but from what i read they arent tied to hextech, you only get them when you get an S with that champion who is level 5-6. if anything it might be a bug, again though im not too sure.
As for your second part. its hard to say when a lot of people have different definition of "defending yourself". But from what ive seen as long as your arent being toxic back and actually defending yourself (which should really only mean muting the person and report them after the game) then nothing bad should happen. But for the most part when people say they were just defending themselves when they show their chatlogs they are basically being toxic towards the person who was toxic first, which doesnt solve anything and just shows two toxic people in the game.
For your third point you really should list example if you are going to call them out like that. Been playing this game for possibly over 6 years, and i can say they have yet to actively not want me to play their game. Ive been enjoying it and i dont really see how they trying to get people to not want to play. Again list example because at least to me this doesnt make sense.