I haven’t used Linux in a decade and half (I know myself and I wouldn’t reboot once done gaming and I have one game that is not just wine or whatever and done and it’s my main one) and I still miss things from it. The first few PCs I used were Linux. It just sticks with you.
When I started my apprenticeship as assistant tax adviser in 2016, I used the fax regularly to send stuff to the IRS equivalent. I was also in charge of printing certain thing because the setup for those to come out right was unholy. In the company I am in now, we are pushing for digital solutions but still have a lot of clients with a listed fax number. One of our digital partners had fax: we don’t do that here written in their signature.
It is a thing still sadly.