How do I go about gaining support for a new tag?

I have been tagging totem poles in my town “man_made=totem_pole” similar to how utility poles are tagged.

I want to encourage others to do the same for their area. Specifically people in the Pacific Northwest of the US.

First of all, does the tag seem like the correct format? And second, is it okay to start telling people to tag their totem poles this way?

Thanks!

Edit: Sorry, I also ended up asking this question on the help forum and feel this duplicate might be irrelevant now.

Decided to use tags that are being used in Stanley Park Vancouver, BC, Canada. OpenStreetMap

tourism=artwork
artwork_type=totem_pole
historic=memorial
memorial=totem_pole