www.nytimes.com/…/gaza-tunnel-israel-hamas.html

Second, if it were there, it likely wasn’t intentional.

It connects to, and opens into, a hospital referred to by the New York Times in 2008 as “the de facto headquarters of Hamas.” So clearly pretty intentional.

Third, they could have bombed the tunnel without hitting the hospital

They did bomb the tunnel without hitting the hospital.

Fourth, and again you can fact check me in this, but it would be pretty strange for a large city to have no orphanages.

There are zero orphanages in any American city, for instance. Not strange at all. Orphanages are kind of an archaic and disused way to handle the case of orphaned children - modern societies use a foster system, instead. Gazans simply don’t care so they make no provision at all if the family doesn’t step up, so they don’t run orphanages either.