I'll argue that, in 2023, the most basic 'computer' skills are knowing how to:
* buy a smartphone (okay, not even a skill)
* connect to the internet
* visit a website
* install an app
* use basic apps, e.g. read/send email, read/send text messages, view/take photos
That's it. And none of this is necessary for survival, nor to even be what I'd call a well-rounded person. They're just modern conveniences. Things beyond this are trainable. People get bonus points for knowing how to use 2FA or spot phishing attempts or other scams, but I view this is going beyond the purview of basic computer skills into basic cybersecurity.
So I don't see not knowing what Excel is as equivalent to not 'knowing computers.' But you know what, why do you get to choose what is a 'cool thing' to celebrate? If someone chooses to be computer illiterate and celebrates it, why is that a problem? My wife doesn't know how to drive. Guess what, she'll never murder someone with a car. Kudos to her.