Hi,

if you look at taginfo https://taginfo.openstreetmap.org/keys/natural#values, you will see, at the last page, I'm the only one who used these "bad tags" : in fact I try to improve the area but there are many things to do and I have no time to finished them in one day. So I put these temporary tags (which are "neutral" because not used by anyone/any software/any map) just to remember what I have done and where I need to continue my improvements.

Like I said, these tags are temporary : water2d is currently removed for example because I have made what I wanted to do in its area.

Localization of others are changing in time according to my improvements (currently I work on water3)

Best regards