Serious question why is it ok to mock people for this?
Someone could be severely struggling with their mental health and find going the gym to be something that helps them greatly. Not only is it a place for exercise but it could also be a place where many people get most of their interactions with other humans. The gym is therapy for some people and has helped aid depression in myself as an example.
I do find it weird how the push to get pubs reopened is so incredibly huge but people wanting to return to the gym is seen as bizarre and unnecessary. It says a lot about our culture.
You can want gyms to re-open.
You can't want gyms to re-open because you feel hard done by as a "fit/healthy" person and don't really care on the effect cancelling lockdown has on others.
Quite a distinct and obvious difference.