Great to hear you challenged conventional wisdom and found improvement. I'm someone with zero experience doing any serious running, but get paid to challenge conventions. The idea that there's some universal pace sounds absurd. Bodies are so different, if there is some magic number it would at least be ratio based. Sports medicine is full of charlatans, and conventional wisdom in sports is constantly being upset by someone that tries something new and succeeds by shocking margins.

Just remember that there are still people alive today that believed in their 20's that it was unsafe for women to run in marathons because it would damage their reproductive organs (early 1970s before women were allowed to compete at all). That people holding an opinion as incorrect as that had a hand in writing the phys ed textbooks that were used over the next 50 years.

Remember the history of world records for the fastest mile, that it was thought impossible to go faster than 4 minutes for more than 50 years until suddenly someone did, and then two more people did the same within a year. We are so prone to believing bullshit, don't let anything set your limits.