How reliable is the PSA 1.2 engine?

I have read a lot of bad press on the PSA 1.2 petrol engine, how much of this is actual and does it cover the turbo and non turbo engines?

Are there cambelt issues with the 1.2 PureTech engine?

I am thinking of buying a 2019 C4 Cactus, I have read that there are some cambelt issues, can you please advise on when you should change cambelt on these cars and should I be wary of them? And also is...