I'm surprised they are going to require you to make an account. They are all about privacy.
There has to be some sort of intermediary mechanism if the sharing is to be seamless. Otherwise, how would they know where to "send" your bookmarks, etc.?
Apple's intermediary is iCloud, which requires an account. Other software uses Dropbox, which requires an account, etc., etc.
On a Mac since 1984. Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.
