Well there's always a variety of different opinions. Usually the most sensible are the least heard and the most quiet.
so magnus is only good because of his opponets mistakes

So< i could be as good as Carlsen, if only my opponents were as bad as Anand, Kramnik, Aroninian, Nakamura.....

Do you mean that you Can win a chess game without a mistake from your opponent? Do you mean that chess is a forced win from Black or White?
it has nothing to do with his chess ability
this is how some people argue