What's the worst non-canon decision in the history of Trek?

I found our own @youngtrek in an issue of All-Star Squadron (or was it Infinity, Inc.? I forget), which is how I learned we live in the same town.

My favorite random find, though, was modern sf critic Lisa Yaszek, now a professor at Georgia Tech, who wrote a very enthusiastic letter to Green Lantern: Mosaic back in the 1990s as a graduate student.

Going by memory, I think it was All-Star Squadron. I know I also had letters in issues of Action Comics and Avengers. (Of course, when I want to check Grand Comics Database, it’s down at the moment.)

— David Young