
If he become so badass with magic, unlimited mana/magic, top of the class mage, whatever (his stats was infinity) then couldn't he use the hero summoning magic himself? Lol, if that world mage can do it then can't he do it too?

he could but their is no probability that he can go back to his own world on just one try, and what if he lands in another world and his status changes and becomes low without this cheat which could make it harder for he to go back to his world.
the best chance he has that is sure of is just to stay in that world
I always read where the MC goes to the past but coming to the future is cool too almost like Futurama ahaha.