Another advantage of text, for me at least, is that I can read much faster than I can listen. This is why I prefer text articles to news videos, even though video can often offer extra visual information over what photographs can offer.
That said, I do somewhat agree with the article’s concern that live conversation is an independent skill and potentially has its own unique side-benefits that might be becoming rarer.
Personally I am very willing to pay full price and even occasionally buy pointless extras I don’t care about if it helps reward their passion for a project I see as a valuable contribution. I’ll even pre-order or provide them some free advertising in some cases. Especially if its the sort of dev where it seems like their long-term survival might be in question.
I feel like you can usually tell when the dev needs money or doesn’t.