While I think it's unreasonable that obviously hardware aspects aren't covered by some manufacturers after rooting, is there a straightforward better alternativ

While I think it's unreasonable that obviously hardware aspects aren't covered by some manufacturers after rooting, is there a straightforward better alternative? I'm honestly wondering, because I wouldn't expect a company to provide support for a device with software they didn't authorize and aren't familiar with. If you want a device that you own, then you need to be responsible for the full cost of ownership, though again that should ideally only extend to software and aspects of hardware controlled by software. Personally, I don't have a need to root or install alternative ROMs until well after the warranty expires on my devices, so I don't mind the current situation as much as some.