I used to have a 40 mile RT bicycle commute and occasional telecommuting. Now my job is 100% telecommute.
There are good things and bad things about that. In practice my fitness has fallen off. I ride recreationally. But can't seem to work in nearly as much of that. The ride is more optional and I don't need to ride that far.
My tolerance to heat has gone down. My readiness for a weekend of camping in the mountains is not at the same edge. I come home beat by what would have been energizing.
The world seems to "excuse you" for spending gobs of time riding if it's a commute. So the built in support goes down, which only adds more weight to the dont-ride pressure.
It's not that one could not overcome all this. But commuting, you don't have to.