> From your latest change, I can now see that the user disastag changed the entrance tag to include his company details.

There was no entrance tag, but the address point conformed to the position of address node in the data from the Swiss Federal Office.
Moving the data to the center of the building reduced the precision.

> I feel that using the entrance tag to include company details is not correct.

Fully agree. The entrance node to the building should be added at the correct position to help routers. If a POI is mapped in the building it is best if the position of that node corresponds to the real position. If the whole building is one office, the tags can also go on the building outline.