For most people, it probably wasn't until MySpace and the like and the popularization of blogging in maybe the early 2000s that an "online presence" was really a thing although people increasingly had access to email etc.
(My dates may be a bit off but not by a lot.)
2008ish was really probably the most massive change in this. About every cellphone turned into a web device at that point and social media started it's mega boom as a phone app.
Even when you were out in public everyone was on the net.
And, yeah, the 90s weren't really a mobile era for most people overall. I got a laptop at work in the latter part of the decade because I sort of begged and pleaded but it was mostly unconnected. Even when I became an analyst in 1999, I had to buy my own laptop for travel as I was just given a PC. (And WiFi at conferences was still an adventure.)