The tires on that car are the least of his concerns. You should be able to put a set of tires (all 4) on there for $500-600. It's nothing like putting tires on a truck.
We owned a 2016 Camry from 2016-2024. ~130k miles, very solid car. No issues with anything really. Regular oil changes, change tires every 30-50K. I honestly can't think of anything else we did to it. It was totaled in a wreck on 12/31/2024 when somebody side swiped my wife passing. Not heavily damaged, just more than it was worth. Insurance gave us like $12-13K for the car, I was happy.
I would only be concerned that it sat for too long and not used. If it was driven somewhat regularly, even even a few times a month, no worries. If it sat for years and years I'd be concerned.