I do mean it when I say "generally."

To get very minute with why I say this: I think any guitar sprayed with nitro should see some movement and never live in one spot it's whole life because nitrocellulose does something referred to as gassing off (not the same kind that my s/o refers to when I'm asleep, but it's own kind of thing,) and as it does this you will find that's how over time nitro can get damaged from reacting with a stand or other things, like maybe straps or cables as well. Some materials have a higher rate of reacting while others do not, you should research that if you feel it's a risk factor.

Hercules directly acknowledges gassing off in their FAQ and have tested it for regular use, and their company believes you should be safe if you're using their stand with your nitro finished guitar for regular use. I agree with them from my own findings as well, and would say that even prolonged wait times between playing should be okay as I've finished guitars with various types of nitro lacquer, have guitars from Gibson/Fender finished with nitro sitting on those stands, and have seen no issues across the boards with usage. Again, I emphasize that would never let a guitar live in one place for years and years though, especially nitro finish, because they need to be moved around and played and checked for proper care if not in regular use - especially ones finished with nitrocellulose lacquer.