I’m going to be a bit pedantic here, but I think it’s valid.
Them getting feedback on their work is a reason for them to participate. What are you expecting to get out of it?
It’s a bit of a gamble, and it’s hard to put the genie back in the bottle if you do try it out. But overall it sounds like it could be worth it.
People don’t need to “check” Whatsapp, it’s ingrained in their personal lives most of the time.