I’m up there in height @ 195cm and find that super steep STAs are a hindrance to making power. Good thing that most bikes that are listed at 76-78 degrees seem to fall to 73-75 at my seat height because of the slack actual STAs. 74-75 is my sweet spot for powering steep climbs while keeping the front end tracking. Steeper than that and I feel like I’m tiptoeing up climbs. For more rolling terrain, like Galbraith, a steep seat angle fells absolutely terrible because fork is weighted too heavily.
Years of road and TT riding have taught me that I cannot generate power with such a steep STA. On a TT bike, the steep STA is only usable because you’re finding a balance between power and aerodynamics.
I almost feel that the industry knows this so they publish steep STAs in geo charts only to have them fall in a more balanced range when the saddle is at climbing height.