I agree that reviews that for one reason or another are very long, heading can be very useful in organizing the content, but most reviews just don't happen to be that long to really need them. 500 - 1000 word reviews can IMO go easily without such structuring. And anybody who is less talented at writing can always easily structure their reviews outside with headings and just remove them afterwards, or use them as crutches to re-organize the content before posting.
I mean I used a lot of headings in the past, but upon taking a new look and removing them from most old reviews outside of a couple, the actual content worked just as well if not better without requiring any further alterations. There is always a skilful way of using headings, but many reviews just don't really need them, or people don't know how to really use them. I've noticed on some other members who used to use heading all the time to have abandoned them without actually altering their writing structure, and they are just as clear now as they were before.
I guess it's just a case of knowing what a review really needs to best present the information therein.
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“The Harada Twins were identical in almost every way,
yet they were totally different in almost every aspect.”
Ford A. Thaxton ÷·ç Gomer