I believe this breaks our twenty-year rule, so the question may get removed, but if not I can provide a quick answer: "Maybe." It's a very hard thing to quantify. I've recently studied this in the context of ceramics. The most valuable effect of the internet is really the globalization of the market. I can get on Etsy or Ebay and sell my handmade wares to anyone in the world. The internet has helped continue pottery as an artisianal craft. Of course, this is a rather different role than before, where potters would make the functional vessels for everyday life as well, and globalization that comes with internet has often introduced plasticware to replace ceramics. Critics bemoan this as colonialism and a loss of culture, since many regional traditions and iconographies are preserved in and linked to pottery. Many of the folks I work with are more optimistic and find the critics don't give much agency to the traditional craftspeople helplessly getting slighted by Westernization. They see internet as a turning point rather than a downfall, an opportunity to increase awareness and heritage preservation.

So yes, there are many who would agree with you, but they are not without criticism. It really depends on who's doing what. If it's some suburban, midwest USA white girl learning on YouTube to make traditional Indonesian wares as her own hobby, one can hardly deny it's appropriation. But if it's the Indonesian woman who made that video using her channel to educate people and to promote her own wares, whose to say she doesn't have a wider audience than before?

This is skirting in the 20 years rule a bit, but I think it can fall under "craft of history" questions, which are allowed. :)

You might try going to the source and asking crafters how they learned and what effect the internet has on their craft. /r/knitting is very active, so is /r/calligraphy. Most knitters hang out on a website called Ravelry. Beer brewing would be another traditional craft that's seeing a big surge you might take a look at.