40 years old kid here. iPad Pro is a perfect machine to run a casual shooter like Fortnite, I’ve spent hundreds of hours playing it this way.
Because that seems incredibly awkward and uncomfortable?
Playing on the table is one way - but it hurt my neck too much. I preferred the "claw grip" on my phone while laying on the couch - though I could only comfortably do 3 fingers. Some of the best mobile players do 6!