When they considered permitting in-line muzzleloaders for any hunting at all, IIRC, even Mr. White was in the state capitol to testify.
Part of the problem arose when the legislature re-wrote the game laws back in the 1980's. Prior to that any firearm propelling a lead or expanding ball or bullet was permitted for large game, except 25 cal and under rim fire. There was no attempt to micro-manage the type of firearm. When the law was re-written, the legislature limited the permissible hunting firearms to center fire, rim fire, muzzle loader and shotgun. No other firearms are now permitted. So the current law, leaves out breech loading Ferguson flintlocks, breech loading Sharps percussion guns, breech loading wheel locks, etc. I was living out of state then or I would have lobbied to keep the old language.
The limited few at our Game Commission who make the calls about firearms technologies have flip flopped several times in the past decade. Two years ago, cap and ball revolvers were considered muzzleloaders, then that was reversed and they were considered illegal for most game and just recently, they were approved as being "like center fire" and are now considered center fire. (They are and always have been center fire)
For forty years, flint locks were required to have open sights, then in 2009, they removed the open sight requirement to permit peep sights. In 2011 they put the open sight requirement back in the rules and said open sights now includes peep sights. (That is still a head shaker)