Assuming the hinges don't crack, the laptop doesn't get dropped, the power connector doesn't break, the RAM doesn't fail, there aren't any capacitors waiting to blow, and there aren't any hidden cold joints in a BGA socket somewhere, I guess you will have to find a new distro 7 years from now.
Most laptops don't come close to lasting 10 years. Desktops are a bit better, but most of them have been 64-bit since 2006 or so. I don't think it's worth wasting a free software project's time and money to support such a fringe case. I'm sure there will be a demand for 32-bit distros in 2023. You will probably be able to use Gentoo, CentOS, Debian, one of the BSDs, or else some enterprising people will create a niche distribution to fill that gap in the market. You will be fine.