Casual player thinks game is too easy.

This isn't a moba. You aren't Faker. Hack n slash/arpgs/dungeon crawlers are "easy" by default. D2 was a fucking face roll dude. It was a decade long power creep that got better with each injection of power.

Watching a pro play a moba, shooter, etc...
"I could never do that."

Watching a "pro" play an arpg...
"I could do that if I slept less and played more."

That's the genre, and it always has been. It doesn't have to be a bad thing.

All popular games are made easy to rehabilitate people that got stressed out from real life.

Real life is where all the hardcore monsters/humans are at.