Why doesn't the 310th Fighter Squadron F-16C livery get the historical treatment?

f-16-passionate-patsy-p-47-scheme

This paint job appears to exist in real life, but it’s marked as user-generated in-game.

Is this normal?

User-generated means that someone from the community made it instead of Gaijin.
It’ll eventuallty get tagged “Historical” which is what you want to look at to see if a camo is from real life or not.