Depends, I’m finding just riding helps more at the moment after a 4 month enforced lay off.
I think structured training has it’s place, but it’s for when you run out of time in a week and have a specific goal. No point limiting yourself to 4 interval sessions in a week, if you’ve time for 10 commutes and a weekend ride and your goal is just to lose some weight. The structure is more about doing the right workout (sub threshold, threshold, VO2max, sprint) and then having enough reovery (aprox none, some, a day, 2 days respectively) inbetweeen.