@stfn thanks it is mostly an overused term when people talk about whether they can use a Linux Phone as their main phone. It is more the fact that someone has to say it rather than, I have 5 different devices that i use differently, I don't think there is anything wrong with that :)
@goatwildernesscollective I think the phrase means something you use daily _in contrast to_ something else you use occasionally, and in that context it makes sense to me. “My daily driver is an Ubuntu laptop but when i want to game on the weekends I fire up my arch desktop”