What it takes to write a nanoessay on a subject you are passionate about? I can mostly speak for myself.
1) If it is the subject I am passionate about, such as discrimination against men, then the first step is thinking about the subject. For me, a typical nanoessay is a product of about 50 hours of thought. Some thinking is accompanied by reading Twitter and Reddit arguments on the subject. I participate rarely, but I can be mean when I do! Some thinking is done as I am walking with music on. Thinking about issues which are important to me comes naturally -- while actually writing the thoughts down requires work and self-discipline.
2) A typical nanoessay does require research. Nevertheless, I can put in writing something which I had mostly researched in 2002.
3) A typical nanoessay requires 90-120 minutes writing. Given that I mostly work as a housekeeper, taking extra 90-120 minutes per week can be challenging. It does require self-dicipline!
4) Those who write Politically Correct nanoessays get great appreciation, they are published on all Social Media and Mainstream Media, and they get paid for their nanoessays. Those who write Politically Incorrect nanoessays get little appreciation. On this and USMB forums, I can get from 0 to 30 replies. On Reddit I used to get up to 400 likes. Now, my main account and most subreddits discussing men's issues have been banned. Hopefully Elon Musk acquires Twitter -- then I will post my nanoessays there.
5) After my main account on Reddit was banned, I became lazy. Of course I never slack with respect to housekeeping, but I have been slacking in writing nanoessays.