It can if they spend the time mapping the canyon with aerial photography.
This is about the best detail I’ve seen in a ‘canyon’ in FS2020, Garden of Gods in Colorado springs
Compare that with the Grand Canyon
The Grand Canyon looks great, but only from a distance
It’s a shame PG data is all focused on cities, it would work really well for mountains as well. Now and then you get a cliff side included with PG data and it looks soo much better!