first of all, great input and quite summarized. To tell you the truth though i will agree with this:

There's no golden format on expressing an opinion about something. A standard format that everyone uses is safe because it works and gets a coherent opinion out, intro, body and conclusion. You've seen some anime posts going around Anime Realm. It works and it gets votes but if everyone posted the same way, it becomes bland.

The vast majority of us are not actually "writers". That doesn't mean ofc to copy/paste formats. To give you an example, my format was always pretty basic, like Generic info, Plot, What i like and what i don't and a final rating. I was one of the first people to actually write about anime and anime reviews from back in the days (Steem) and this was the way i grew my stake.

I saw many people copying and pasting my format, which was pretty annoying considering that my format was pretty dump to be honest as i had not idea and created a format out of my mind without any guides or such.

The bottom line though, is for people to ofc read and learn a thing or two, integrate these guidelines in their own posts and create something unique. I really enjoy reading different kind of formats and ways of writing, even for example if some give a lot of attention to the plot. If i haven't seen an anime i prefer a more extensive plot paragraph (without much spoilers) instead of "this is an anime with demons and demons slayers, or this is an anime with pirates and powers coming for fruits", that doesn't make me check the anime at all!

Basically, i am just saying to read your guidelines because they can find a lot of valuable info, but never forget as you say as well, their own way of writing. Don't try to make something that maybe lacks a bit of formatting to something that is similar to basically everything else! Write something and merge your format with what you like!