In OSM we can map all things that can be verified on the ground. Apart from that, we do not have any relevance criteria in OSM. The mapping of street parking is very well documented in OSM, however, there are some aspects that are missing in documentation, e.g. irregular parking like at this location. Please also be aware of https://wiki.openstreetmap.org/wiki/Any_tags_you_like.

In my opinion, your worldwide deletions of this kind are not helpful, because you don't know at all what the mappers on the ground are aiming at. Just because you don't understand something or the tag is "new" doesn't mean it doesn't belong in OSM. The tags you delete are rarely "wrong" because they do no harm. They are only "wrong" if they contradict the common/documented way of a tag.

Therefore, in my opinion, you should stop such deletions, they might even be vandalism in some cases.

Best, Alex