Which is not the same as saying it works well.
English single triggers have a well deserved reputation.
Best,
Ted
I am no fan of STs - only one of my guns has one, and I have replaced the STs on two of my guns with DTs.
If you view the pigeon ring as the crucible for testing vintage shotgun design, a lot of Brit pigeon guns had/have STs. Given the stakes involved, it seems unlikely competitors would have requested STs on their guns without a high level of confidence that they worked when needed. What subsequent restocking and other gunsmithing did to some of those STs is a different story.
But the larger point is that there are a lot of very fine , very expensive vintage Purdey, H&H, Boss, WR, etc. shotguns out there with OEM STs, which would contradict a claim that an ST is the worst thing you could do to a double.