Thanks. I think it's fantastic that you are working on making Wikivoyage better. I just find it a bit confusing to have the routes in OSM as a route=hiking relation, because normally that would mean that a trail is marked on the ground with a symbol, there’s an organisation responsible for maintaining it, etc. and that's how the tag is documented.

Do you know Walkhighlands? It’s not open data, but free and you can download GPX tracks for all the Munros. You could point Wikivoyage readers there (e.g. https://www.walkhighlands.co.uk/lochlomond/the-cobbler.shtml) The route descriptions there are very high quality, step by step with photos, and there are also walk reports from other users.

There are also other websites where you can upload and create your own tracks and others can download them, have you had a look at Wikiloc?

I'm no copyright expert, but usually OSM is very careful with this sort of thing, more careful maybe than other websites like Wikiloc