I don’t have an issue with the soft limit on the number of keys, if the limitations aren’t too strict. The way it’s described makes it sound like it’s just to prevent abuse.

I didn’t even have a problem with the price parity, since that’s limited to the sale of said Steam keys on other store platforms, which makes sense. The developer can still hand out keys for free, just not sell them cheaper anywhere else. I would however find it problematic if they also required price parity for sales of non Steam key copies on other stores.