Beg your pardon, Wingnut
The U.S. N. jets with wing fold use a MECHANICAL system to enable the hydraulic wing fold feature. My A-7 had a cable on the cover of the electric switch. Raising the handle pulled a cable that removed a mechanical lock on the wing fold mechanism for each wing.
So we had a two step safety system. You couldn't get to the switch unless you raised the cover that mechanically removed something to enable the hydraulics to move the large metal rod connecting the outer wing segment to the inner. And then another system cranked the outer segment up or lowered it.
As with others, I question early removal of the feather lock. However, I understand an earlier mission had a bad pitch moment excursion and used the feather system to stay under control. If subsonic at a low mach, seems O.K. At transonic conditions, all bets are off.