The new SEO is optimizing social media. Your visitors and customers are out there, you can talk to them, they can talk to you. You either create a following or pay an influencer to rent their following. In a way this is like going back to the old days of promotion and marketing where you'd go door-to-door to sell. Nowadays the web is saturated and filled with so many scams that word-of-mouth and being associated with a trustworthy face has become important once again.
This statement is so blatantly wrong that it actually put me off even reading the rest. Spreadsheets are stronger than they've ever been and are never going away, let alone being "outdated." Sure there are products that claim to be "the next spreadsheet" but most of those actually serve a different purpose: no-code app dev.