> If none, how does what you have done here improve the quality of OSM?

In the worst case (this shop is not existing) then benefits are basically nonexisting, but it is also not worse than before.

This POI will be a bit more likely to be shown as requiring resurvey in some (not all) tools.

> Are you sure that https://www.openstreetmap.org/node/2361007180/history is still a shop at all?

As documented in changeset comments this is an automated edit so nothing like that was done (if it would be verifying based on survey or something then it would be not done with such description)