It’s definitely true that SS is a very wide zone. There’s some other posts about this on the other AT thread. I find those 95% ones more like easy threshold than sweetspot; like you I’d prefer to do longer SS intervals.
I think my point about VO2 is 100% valid: AT tries to preserve the intent of the workout, it isn’t a random workout selector as you imply. The specific issue many of us have is with the very wide bands on SS workouts.
Edited to include the link to the other thread where it’s discussed with Nate: How is Adaptive Training working out for everyone? - #271 by Benrlelliott
Other poster making a similar point that some of the SS workouts are at very high intensities. Nate’s response around their data showing they’re still productive. Not sure how far I agree but he’s got the data and I don’t 