> Also, do you still think that it was an undocumented bot edit?

Yes, in the sense that you wrote some documentation saying what you were going to do and then did something else instead.  To be honest, I have re-read https://wiki.openstreetmap.org/wiki/Mechanical_Edits/Mateusz_Konieczny_-_bot_account/fixing_malformed_shop_tags and I still struggle to understand exactly what you are trying to say. I presume that "Please write at bot approval thread." means "please reply on the mailing list" to prevent part of this change from occurring" I did that and you ignored the request.  By that definition it is surely an undocumented mechanical edit.