I just pay for the sync.
I like that I can have some vaults that sync to both my personal and work laptops and other vaults that only sync to one or the other.
It’s awfully convenient without any vendor lock in since I can just take my plain markdown files and leave anytime.
Another option is obsidian lets you set which folders should sync. So I have everything in one vault, and in my trusted environment I let have everything synced, work machine only gets the work folder, and windows gaming machine only gets required non-confidential stuff (i.e notes about stuff that isnt me).
Its nice to be able to review it all from one machine though