This bicycle_parking=anchors tag was added 2012.

Here's Mapillary imagery from 2019 where nothing is visible which qualifies as bicycle parking:
https://www.mapillary.com/app/?focus=photo&location=Berlin%2C+Germany&lat=52.503794999972&lng=13.4819487&z=17&pKey=278610207259779&menu=false

So probably best is to remove the tag.
