First of all, be nice - say “hello and welcome”. It’s only their 6th changeset so it would be a bit remiss to say anything before saying that. I’m absolutely sure that I hadn’t got the hang of things in my 6th ever edit.
I’d introduce them to the large thread here (either at the top or the summary) where they can read about the various points of view on either side of the argument.
Beyond the “does it belong in OSM or OHM” question though I suspect is a bit of a tagging faux pas - this way has been added as railway=disused which I suspect is very unlikely, given that it is also a road. This means some rework is definitely necessary, even if what they’re trying to add to OSM makes sense here (which to be honest I very much doubt).