The trouble is with Lexel, is look his reply to you. Saying to be conservative. That was said on page 1. He add nothing new ever. If you feel like you go too fast, you probably go to fast. He is an idiot as other have said. Repeat ideas like a parrot and then when he is wrong he vanished into his turtle shell and comes back when he thinks we forgot.
As for the rest of your post. Excellent points. Obviously knowing your whole lactate curve is best and testing. But I have had great success with the paces from page 1 without being tweak much. At first I was very much on slower end. Now I am actually sometimes faster than sirpoc guide pace on short repeat. I think he says it's just a guide to go as starting point. That is very much how I interpret it and tweak paces for individual. What I would never tweak is two factor. 3x sub threshold a week and 4x easy runs. This formula just seems standard and I also play around stupidly as others so at other points and it just creates unbalance. I have now manage 29 straight weeks basic as this. OK, so I not as fast as sirpoc and will never be. But I have knocked 3 minutes off my 5k PB. Hey, it makes me seem superstar now at my local races to my friends, so I am happy 😊
My took is primitive and I have made very big progress as note. All I did was the friel field LTHR test and simple to make sure I do not go over LTHR value end of workout or especially during. This is almost basic as you can get and it work believe me and I was someone who was massive skeptical when I first read this thread.
I feel super fresh compare to anything I have done before. I look back now and feel idiot for destroying myself doing those 6-8*800 track workouts and equivalents.
I work in the science field in my career path and whilst I like to want answers in field I work in, all I care about here is being faster running. I just don't see how anything lexel propose can help make anything better. If you have your 5k pace recent and Lthr you confident with, it almost plug and play. Maybe after 2-3 sessions you realise paces might be not quite for you, but it's a decent wide range. Then off go. I don't see how converting anything or everything into % of CV/CS going to improve anything. That what we are trying to do here, right? I want and strive to be better for myself as slow runner who is now less slow and inspired by Strava group and other progress, obviously especially sirpoc.
By the way, to the guy who did nice podcast. Also well done. It was nice summary and agree with others you should do follow up with man himself sirpoc. I think people almost really interested in human story behind this. There's many questions more I'm sure we could all ask. Maybe a Q and A session. I think it would go wide as I see this talk on Reddit as well so would expand your pod. Just my thought.
Maybe as I write this I am overly harsh to lexel. But I think he can be better person and take some critical on board. The thread isn't about him being right or about him and I think personal he wants it to be or us to say 'well done Lexel, you were right all along! Let's just forget all the success and do it your way!' Or at least that how he communicates.
I hope my English isn't too bad, I don't get to write in it much these days. Many thanks for listening to my thoughts.