There’s an emerging school of thought around this on Zwift - guys race loads and vary their efforts in the races or treat some races differently. Some making multiple attacks, others riding on the front, some taking it easy and hanging in the pack at tempo etc.
Varying training responses yet doing something fun every time - racing in group events. I think this is quite advanced and hard to keep track of but there looks to be fast guys, truly fast, elite level, seemingly managing to make racing year round work. Zwift have the data and if they were heavy on analytics like TR then we’d be able to get a real picture of what’s happening there.