There you go. You purchased the Y after the USS were removed. Therefore the onus is on you, the buyer to research that the vehicle has the options you want/need, not expecting they do.
As fast as how to fix the problem. The only real solution is to use your mirrors and cameras. If pulling in to the garage is your biggest issue. Reverse in so you can use your rearview camera to gauge the distance you have from the rear wall of the garage.
The USS are nice, but there are easy solutions. It may require you make a change to your parking habits, but they’re not impossible changes to make.
If you purchased after October 2022, you really have nothing to complain about since it was known your Y wouldn’t have USS.