Ground cover returns surprisingly fast, there are old trails up white hill that were ridden last year and almost completely gone now. It’s just grass and bracken after all, grows like weeds.
I don’t know if there’s new guys digging up there… I think there must be, some of hte building is just totally wrong (lots of organic crap used, I saw a new jump almost dissolving in a breeze). But also there’s lots of bits where there’s no one defined line so it ends up like the second pic, not just damage but spread out damage. If they’d cut in a single clear line then that contains the riding more.
But I do think a bit of realism is required on this scale of damage, the actual erosion is really pretty minimal- we’re talking inches here, in a manmade and fairly monocultural bit of woods, all fairly contained. The scars are ugly but they’re not deep nor permanent.