I like black, but I see your point. No matter what you shoot you want to keep your bore be OCD about cleaning. Ml with p or B/p are easy to clean, it ain’t rocket science ( well sort of is) but clean and keep clean. No Biggiei don't care about your vast experience in competition or whatever. Don't care that the ignition point of Pyrodex is higher than black powder. Don't care that most flint lock shooters can't make it work in their guns. Fact is that some flint lock shooters make Pyrodex work in their guns.
In the mid to late 1950s and early 60s i traded for and traded away dozens of original muzzleloaders; those guns were worth very little until the Civil War centennial and the US bi-centennial came along. The bores of over 75 percent of those guns had been ruined from using black powder.
Malarky.
Go ahead and use your worshipful black powder, i'll use something else.