No, I bought the device, I should be able to do whatever I want with it.

And app developers have the right to not offer their services to users who don't give them the security model they want.

You are free to install a custom OS which provides you the security model you desire. You have choices.

No, when you can't participate in modern society without specific apps, I would argue those developers, in fact, don't have the right to not offer me their services.