That’s a fair point — ideally, we’d have detailed tags for every way. But in practice, that level of detail isn’t always available, especially in less-mapped regions or when contributors lack time or local knowledge.
A “practicality” tag can still be useful — it shows the way’s been considered and might need more survey. More importantly, it gives mappers a place to note non-legal issues, helping keep access=* for actual legal or signed restrictions. That alone would clear up a lot of confusion and misuse.