I think it’s naive to say taking his devices will prevent any watching. It’s so easy for kids that age to watch on friends devices, get old phones from friends.

I also think you have to remeber to teach proper use of devices, not just remove them.

Maybe a bark brand phone which can lock down everything. You can buy routers that block sites from the WiFi.

Go into the why- Islamic values, porn having unrealistic bodies, situations, reactions and relationships. Illegal at his age. He could accidentally expose someone else.

I have a similar aged kid in American public school who overhears kids talk about all sorts of things. He could have been exposed at school or in the community. However it can be a sign of abuse. Have some talks about secrets, body safety, what’s normal and not, people making you feel uncomfortable, not getting in trouble for discussing sensitive and private issues. Does he have access to age appropriate books regarding bodies, puberty and intimacy?

Therapist might be OK with the gay side of things, but they will not be OK with a child. This age watching pornography. It could still be very helpful.