These are ways that are proposed to the municipalities to fix missing pedestrian and cycling accessibility and in some case also reduce the probability of accidents. We are trying to build a separate database for these, but for now, this was the best solution to transfer this information to all the municipalities and autorities in the region. Also, if you check the official OSM wiki on notes, it says that personal notes and public information notes are quite valid. That is the exact purpose of notes: adding notes for personal or public usage. The main issue when using an external database for this is that researchers and government officials cannot use routing engines to test the effect of adding these missing links, because we can't update it live after every changeset so as time goes by, the connectivity of the links are being damaged. I wish there was a better solution, turst me, but there isn't as of now.