It does not matter what one likes to read or watch. What really matters is what you can teach or share. There will always be a market of any niche, especially related to dev.

I myself maintain a blog and run a Youtube channel in local Urdu language. When I started, I did not think what others want. I shared what I loved and could do on my own.

As long as you are original, authentic and honest, people would enjoy even a Hello World video by you.