>>58596
Well it's not optimal, in fact most AI coaches are shit, but if it just gives him some progression in/under threshold then it's better than nothing. Beginner coaching is quite easy for your base season, just do a long form FTP test and do 2x sweetspot per week at 90% of that FTP number, starting at 3x20min or whatever and adding 5min total time per session, and then do 3 days of quite easy endurance riding otherwise. I've many clubmates who have progressed quite well like that over the past couple winters.