That may have been the case in the past, not so much any more, IMO.
Elftmann's are superb & have a half-cock notch similar to a 1911 for safety; lots of other, new single stage triggers today that were not there even 5 years ago today....................time move on.
For me, also depends on use................for 3-gun, never a 2 stage, on a precision LR rifle, I do prefer it. Just depends.....................
YMMV
MM
I've been trying the Geissele single stage and for someone who's been on the 2 stage wagon for 20 years now, I'm about to jump off especially when it comes to shooting offhand. I think I still like the 2 stage for long range precision but there's no comparison for shooting offhand quickly.
