Then it should be tagged as
highway=speed_display

See:
highway=speed_display

Great.
And there are a lot of speed displays, that are incorrectly tagges as speed cameras.

Sorry,
I did not mean to discourage you.

Good point-

It is still useful if you recheck you own edits when you get back home and can use e.g., JOSM.

Maybe OsmAnd should at least add a fixme such nodes

Yes but
node/12750199438

Is not attached to the road and is not in an enforcement relation.

Yes it is OK to attach it to the road.
In the same changeset you have also attached traffic signals to the road, even though they are not actually placed in the middle of the road.

But if you do want to do attach speed cameras to the road, then you have to create an enforcement relation with the camera as device and a "to" and "from" points.

It the camera is in the middle of the road and the camera can check both directions, then you must create two enforcement relations.

If you just tag a speed camera as a node, that is not in an enforcement relation or attached to a road, then it is useless because data consumers, i.e., navigation software cannot know which roads are monitored.

node/12766235625

Is attached to way/36851805

Which is a forest.

It should be on the road, not the forest.

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera

Please attach speed cameras to the road.

Or create a maxspeed enforcement relation.

See:
highway=speed_camera