Well what events did the poster run? If they ran the 800 or even the 1500 top speed would definitely be a limiting factor.
Obviously top speed can't be trained as well as aerobic capacity but I feel like people on here conflate hard anaerobic work and top speed work. Even if they did run longer events, is running 4 x 20m fly really going to be bad for long term development? 4 x 20m fly would be 20 minutes of rest and like 150 meters of running.
I think when people on here hear about max sprints they imagine someone running 100m all out, resting for 10 seconds, then running 50 more and sh*tting and vomiting. I don't understand the ardent opposition to speed development on here. Any sane person would agree that almost all runners don't need to do speed development to improve, but at a certain point the 20 minutes it takes to knock out a speed development session it probably more valuable than 20 minutes of easy running. Like what's wrong with this?
M: Easy
T: Sub T
W: Easy and brief speed development
T: Sub T
F: Easy and beer
S: Sub T
S: Long
Like maybe the second Sub T session would be slower, but that doesn't really matter in the grand scheme of things. If I run a 5k at 60% of my top speed how could improving my top speed by 2% not have a positive impact on 5k time, if I still have the strength to run at 60% of my top speed?