OpenStreetMap data is often parsed by automated tools for data analysis. You cannot assume that a human will be verifiying each and every one of the tags and its value. For instance if I want to estimate the average distance from every home to the nearest publically accessible pool, I would get way to many short distances in this case, because private pools must have the tag access=private and right now in your edits they do not.

You said that you added the private tag but I think you forgot to save the changeset because most of your added pools are still missing the access tag. I will fix it for you, but please take the time to read the official openstreetmap wiki before doing edits, so it can be valuable to the community. Thanks for your understanding.

WIKI: https://wiki.openstreetmap.org/wiki/Main_Page