That is the general idea. Past the 4 year mark with zero infections here (and that's with testing whenever I have the slightest case of the sniffles).
Admittedly the odds are stacked in my favor a bit - I'm a pretty extreme introvert in a quiet small town and have been WFH since 2012. I will never accept another position that isn't 100% remote, and avoiding getting sick is part of that for sure.
It's because of others who do interact with people on a day to day basis that your lifestyle is possible. So no, long-term isolating is not a broad solution for covid. It's outrageous that people still talk like this.