Different coaches have different opinions, and of course its specific to an athlete, time of season, etc. No easy answers here.
TrainerRoad view: https://www.trainerroad.com/blog/criterium-racing/
Tailwind Coaching view: https://tailwind-coaching.com/2017/07/12/criterium-training-and-racing-tips/
FasCat view: https://fascatcoaching.com/tips/criterium-training/
Empricial Cycling view: https://www.trainingpeaks.com/blog/youre-training-too-hard-for-criteriums-heres-why/
I found this quote from Empirical Cycling article to be rather interesting:
" When one of my athletes won a national criterium championship, the questions my friends and consultees asked about her training all had a common thread: she must have done a lot of high-intensity training, right? The honest answer was no; besides racing she did no specific anaerobic or sprint training.
I stated above that those with the most consistent (not the highest power output) repeated sprint ability are the best aerobically trained. To see proof, look at some power files from another elite female road cyclist:"
So if you agree with that statement, maybe your current training is already focused on better aerobic training? Those charts don’t speak to the vo2 and anaerobic work you did, I’m assuming a good portion of it was focused on building anaerobic capacity/power/repeatability. Some will make the argument that polarized is better aerobic training.