The company also heavily pushes you towards using that corporate phone.

Huh? It’s a company phone. If they push you to use it, that’s why they have it to you.

If you have naked pictures of yourself on your corporate phone that’s 100% your fault.

Do we have proofs that’s the case? (I.e: that Apple pushes to use same account for work and private life) That has been repeated multiple times but I haven’t seen something that could confirm it.

That’s another way to write can not prevent you from having a personal phone and using that one for intimate things.