"schools have a bunch of structural problems that should be fixed" - yes, agreed 1000%
"schools have a bunch of structural problems that should be fixed, and therefore schools shouldn't ban phones until the structural problems are fixed" - nope. that's a complete non-sequitur.
"fix structural problems with schools" is a gigantic undertaking. it's absolutely worth doing, but it's the kind of thing that will take many many years, and effort across many many different fronts. it's not like Congress can pass the Fix Structural Problems In Schools Act of 2026 this summer and then starting this September schools are now fixed.
"you can't do that small change until the all the larger problems are fixed" ends up being essentially a thought-terminating cliche.
yeah I'm gonna stop you right there