This user created nearly 250 POI, I think all tagged as tourist attraction, most of them having no other tags, some a name not pointing towards tourist attraction.
There are 58 left. I think we have to manually review them. See query above.
Some clearly duplicate existing features. Use common sense whether it is “important” enough to be explicitly tagged as tourist attraction.
If it neither is a destination for tours not dedicated advertised as attraction, simply removing them. Otherwise transfering the tagging to the existing feature.