Paywall, so I’m just going to respond to the title’s premise.
Video is relatively new, sure, but it will never replace text. The two supplement each other, and that’s been the case since YouTube first came out.
TikTok exists, but so did Vine, until it didn’t. What’s on the rise (again) is podcasts. Meanwhile, text has existed for thousands of years and continues to exist alongside video and audio. So I don’t think text is going anywhere, and what little I could read of the article sounds like someone experiencing the Dunning-Kruger Effect and confirmation bias who hasn’t actually done any historical or anthropological research.
Sounds about right for someone terminally on TikTok.