The first picture shows my wayspot that was accepted. 1-2 weeks later again three of these are removed. Looking at the rules in the other pictures. How can this be?
This has been a long-debated topic here but Niantic has something against these particular markers and refuses to let them in, even when the reviewers accept them. They think they’re just street signs or something. Doesn’t make any sense when you look at the examples in the criteria clarifications but that’s just the way it is.
So nothing can be done about it? Some stay for years others barely. Also not sure if player reported or auto detected…
The only thing we can do is hope that they see the light someday.
it’s not possible to tell what triggers the removal, only to guess, which is relatively pointless 
These have been part of discussions on the forum for quite some time, staff has responded to them in several occasions as generic infrastructure, for example here: