I actually am quite fond of this issue. I read and re-read it so many times as a kid.
I was 10 going on 11 when I picked it up and it was around this time that I actually started to realize that comics had a history stretching back for decades before I was born, and that Earth-1 and Earth-2 were metafictional constructs to explain the divide between the Golden and Silver Age. The hokey dialogue didn't bother the 10-year-old me but the history and the way Thomas pulled everything together fascinated me. It also fascinated me that there had been stuff like Superman radio plays. I think it was around this time I started to dig more and more into the Golden Age and falling in love with it.
America vs. The Justice Society and All-Star Squadron cemented my love for the Golden Age, and Roy Thomas' writing made me a pedant for continuity and a supporter for retconning in its original, purest form - fitting continuity in between the gaps to make history as consistent as possible rather than rewriting whole swathes of it and rejecting old versions.
My copy of WF #271 was lost in the depths of time for years, until I picked up a copy from Mile High a couple of years ago. It's one of my childhood treasures.