I think the reason we don't have a tag is that it's really uncommon to have such an installation in a publicly accessible place.

The new tagging looks good.

"Storing it in OSM is even more desirable as it stores real ground truth and verifiable information"

No, it doesn't. It's not even clear which version of images from which provider it refers to. Knowing the date and provider doesn't help either, because you could have any kind of older picture in your cache or you might be served a completely different set of images depending on the location of your computer!

It's also not clear to me how a tag like
calibration:lon = 34,266633 should be interpreted - it's on a node at a different location after all (and won't be understood as a number by most locale settings at all because it uses a comma as decimal separator)

If the building is in a different location, then it should be moved, but not tagged to be somewhere else!

I would advice against the use of "admin_ref". This tag is not mentioned in any other place and this would be the very first use of a subkey with this tag.

"ref" is very well established, and in many cases also used for numbers that can't be verified on ground.

Another thing: Please don't add the species or ref number to the name tag of a tree. This is for actual names of an object only. The species should be tagged as "species" or "species:fr".

Hi,
you used many different keys here that are not used in any other place.

45dubreuil
admin_ref:FR:45dubreuil
admin_ref:FR:45dubreil
admin_ref:FR:45dubreuil:trees

Please, use one common spelling, preferably of the form "ref:XXX".

Hi,
what does this node represent? The tags seem strange:
node/8826337872

Die Referenz sollte jetzt nicht mehr das Proposal sein, sondern die Dokumentation des Keys, d.h.
post_office=*/postal_service_provider

(Die Tabelle dort habe ich nach Rücksprache mit SafetyIng angelegt)

Please don't add points for alignment of aerial images to the OSM database.
There is a dedicated service for that:
osm.wiki/Imagery_Offset_Database

Great.
As an intermediate solution, you could use a list of numbers like
addr:housenumber = 301;303;305;307
This is not mentioned in the Wiki, but actually quite common.

Hi,
the tag "addr:housenumber:interpolation" doesn't exist anywhere else.
There is "addr:interpolation", but this can only be used on ways.

Hi,
you added two areas with no common tags here - could you check that?

Thanks for explaining!
There are two tags already in use:
recycling:plastic_caps
recycling:plastic_bottle_caps

Please check the three nodes you added here. The tags seem very strange.

Hi,
you used many different keys for railway crossing here. Please use only those tags that are documented in the Wiki or are provided as presets in your editor.
I edited several of your nodes, please check the others.

Hallo,
was heißt denn "mechanism" an diesem Flugzeug? Das Tag gibt es sonst nirgends.
"aircraft:model" gäbe es hingegen.

Hi,
could you check this node, there seems to be a mistake with the recycling:* tag.
node/8811542991

Hi,
please check this way, it got a strange tag:
way/952015948

Hi,
please check your recent edits. You added several objects with a huge number of strange tags like this one:
way/952729017

Thanks!

Hi,
please check this building, it got a strange 'height.6' tag:
way/951883472

Hi,
bitte checke die Tags hier - "denotation:amenity" macht nicht wirklich Sinn.

Hi,
could you check this node, it got a strange "MMSI" tag. There is a similar tag used elsewhere:

"seamark:radio_station:mmsi"