Ask HN: Why would a bot (or person) leave these identical nonsense IMDB reviews?

This rambling, apparently gibberish, review has been left with nearly-identical text on several completely different movies:

https://www.imdb.com/review/rw6125310/?ref_=tt_urv

https://www.imdb.com/review/rw6124704/?ref_=tt_urv

https://www.imdb.com/review/rw6125312/?ref_=tt_urv

Even stranger, they're tagged "14 out of 14 found this helpful"

There's no spam links or other obvious reasons for these reviews. Is this just a mentally ill person? Is it a bot malfunctioning somehow? Who are the 14 other people or bots marking these as helpful reviews?