I somehow doubt it. That would be a 1-way ticket to lawsuit-ville. I tried doing a reverse image search, but couldn't really find anything about where the pic is from. It's been posted in a bunch of places, so I'm sure that info is out there somewhere. I'm still putting my money in the mountain bike trail explanation. It looks like a lot of other roll-ins I've seen in videos of the Pacific Northwest and places like Summer-time ski resorts that cater to riders.

No this isn't malicious compliance. There is a maximum gradient for wheel chair ramps. If it's unachievable due to space constraints, you do a chair lift.

There are exceptions for things like park trails where the terrain simply cannot accommodate a wheel chair.