It only matters that the order not change dynamically between renders. This probably could have been avoided if react required a unique key per hook, but I think for brevity it's a decent trade-off.
For the life of me, I can't understand why they didn't go the route of "add an id to your hook." It would solve one of the two big gripes people have with hooks.
ids would be stuttering (especially for things like useMemo/useState), add a different source of error, and—if the goal was to make hooks compatible with flow control—probably create new categories of bugs that would be harder to catch in a linter or even with runtime checks like the existing “number of hooks cllaed changed” one.
Adding visual noise to enable subtle bugs may not be a win.
