@VanSims: I cited the regulations (i.e. rights and also restrictions) in the regions Friuli-Venezia Giulia, Veneto, Trentino and the autonomous province of Bolzano. These are closest to us, have a similar natural environment (Alps) and are most relevant from the perspective of mountain biking. I admit I didn't look into how it's regulated e.g. in Sicily, because I don't care. If in some South Italian flat region cycling off asphalt is maybe not allowed, realistically it's not relevant for Slovenian conditions.
You know where the problem is? Someone presents the situation and issue accurately and correctly. The other side doesn't want or can't understand it or just skims it. Then that someone simplifies and simplifies so that the basic idea finally gets through. At some point the other side says "hey, it's definitely not as simple as you say - so you're lying!"
No reasonable person expects cycling to be allowed absolutely everywhere without exceptions. For every activity, even hiking, there are restrictions and local bans, everywhere. And yes, in Italy mountain bikers have "everything open" except exceptions where cycling (hiking, paragliding, touring skiing) is not allowed, which is maybe one percent of all trails.
I hope you distinguish between "everything open except the following exceptions" (cyclists allowed say 95% of trails) and "everything closed except the following exception" (cyclists allowed 20km out of 9000km trails, which is two per mille).
For a comprehensive overview of legislation in other countries, whose correctness as far as I know no one disputes, I'll attach the link to PZS pages again:
http://ktk.pzs.si/vsebina.php?pid=131. VanSims, I haven't noticed you being so objective as to admit your proven mistakes. Tell yourself once that according to current legislation the possibility for cyclists to do anything is so theoretical and unfeasible that it's almost impossible to implement. With such statements you offend those who invested years and years of effort to open one single dual-purpose trail in Slovenia - that's those "honorable" two per mille, on which all Slovenian cyclists from the whole country should ride. Will you ignore this fact this time too?