Nope, all immich metadata is stored in the db, maybe the files themselves are in the folders, but all info on albums and tags and such would be lost in immich database in 20 years time.
While my 20+ years of photos with metadata stored and sorted by album/folders will still be accessible in the next 20 years.
Its a matter of not depending on one tool specific formats but on standards and easy accessible metadata.
Nothing against immich at all on my side.
It's dead to me too then. Useless crap. Maybe the best hardware and software, but still closed crap.