> 30 years ago you could go days without seeing ads
If anything, it is easier to avoid advertising today than it was 30 years ago. You can block notifications, spam filters are significantly better, content filters at the web browser and DNS level are available. On top of that, certain nuisance devices are possible to avoid. For example: you can still buy traditional watches.
Contrast that to 30 years ago. Nearly all radio stations, television stations, news papers, and periodicals included a lot of advertising. Telemarketers were certainly a thing. Advertising in public spaces was certainly a thing. You could consciously avoid most of those things, but you would also be isolating yourself in the process.
Perhaps you could make that argument if you were talking about 100 years ago, of people who lived in rural areas, and had very little contact outside of their community. Even then, you are talking about a form of isolation. The only difference is that type of isolation was much more common.