Careful! If you complain about game design too loudly, people will call you a game journalist casual!

I'm a pro cuphead player, i'll manage! :P

I can't say that those doors look familiar to me... Care to share a little more detail?

you basically lose karma each time you die and if you die too often those doors refuse to let you progress until you surived without dying long enough. it's not fun

Ahh yes, the "Karma Gates". The doorways that let you access a new region of the enigmatic "Rain World". Each one has a symbol on top of the gateway. And if your karma level is sufficient enough. You will gain access, but. If your level is too low, you will be denied access. Because the area behind the doorway has new challenges that one must face. And without the sufficient level, it means that you are not quite ready for the perils ahead. In other words, it's a bit of a slap to the face from the developers. Telling you to "Get gud, son." Annoying, but an equally challenging concept.

in paper yes, in reality, it's just mean, and if the developper are gonna disrespect me, why should i respect them?

True, but I'm afraid that the aspect of challenging players in this way is becoming more common nowadays. Take a look at "FromSoftware"'s work. They have used this concept as a basis for their franchise.