They've always been this way. I think until recently Google Maps would refuse to save your home address unless you enabled location history, so you had to type it in every time.
For example, a naive user will think they can bookmark their shopping cart page and that'll snapshot the exact items in the cart.
I've noticed people tend to use their website's native bookmark feature, like insta saved posts, or they share pages with the google app to save them to a list. If a site has a Share button then you at least know it'll work.