[openrailwaymap] Using pzb and lzb absence for "no train protection"

Dear ORM community, As far as I know, the signalling layer renders train protection absence as soon as a way contains railway:pzb=no and railway:lzb=no. I implemented this throughout over 10 European countries. A user from Belgium is now complaining about this. He argues that Belgium doesn't have the PZB nor the LZB system anywhere in the country and that thus these tags should not be in the country. Could you please provide your thoughts on this complaint? You can contribute to the discussion at https://www.openstreetmap.org/changeset/85628039#map=13/50.8173/4.3336 or reply to this email. Best regards, Jeroen