An ongoing analysis of Steam's player numbers, seeing what's been played the most.
steamcharts.com
I doubt that is the case. According to this chart, tons of people are playing online games. there is 1,999,681 players playing 1st page games right now.
on list 500, there are 783 users. There is 25 list on each page. That 500 list is on 20th page.
here is cyberpunk2077 steam chart
An ongoing analysis of Steam's player numbers, seeing what's been played the most.
steamcharts.com
Your steam shows your gaming activity, online or not.