Personally I don’t watch videos on software (except for skimming tutorials) since I prefer to learn about topics with written tutorials or Reddit. Software influencers have been on the rise for the past several years, everything from grifters claiming they can help you start an SWE career, to ones that make tutorials and showcases on software.
I’m more interested in hearing about the later. I came across found this discussion: What can we learn from Neovim’s rise in popularity? : emacs, with comments claiming that Youtubers like ThePrimeagen have helped a lot with making Neovim popular. I crossposted it to r/neovim and many so far many users there said that they found Neovim through ThePrimeagen’s videos.
If we’re talking about people who simply make video content about software development, then the biggest impact I see is a bigger reach for any tool that needs to be seen in action or simply sounds too strange on paper. In recent years HTMX was probably affected the most.
I see that a lot of people boil it down to tutorials, but there is so much more content about software development.