Personally, I believe there are no, or maybe close to no experts in the mining industry. Things are constantly changing making it really difficult to keep up with everything. The mining landscape from when I started working in the industry in 2021 has completely changed.
There were no hydro miners, and overclocking in immersion was all the rage back then. Today people are laser focused on efficiency and optimization of their mines.
There are so many topics to write on. There are a handful that I am knowledgable on such as mining hardware. There's a lot more topics I would love to learn and write about. Let me know what is interesting to you