I tried this.
But I'm pretty sure it's not LRM. The person is a much different (and better) writer, in almost all senses. Shorter, punchier sentences. Better spelling. There's a kind of structure to the writing not apparent in most of LRM's online ramblings.
Also there are NO randomly CAPITALIZED letters in the REVIEW which often pepper LRM's online posts.
And when LRM goes negative... I mean, he goes negative. This review is negative... but it's quite reserved in some of its criticisms. When LRM goes negative, it's venomous and personal-- see the RipReports / Scam Info posts. He basically calls you the scum of the earth.
The tone is much different from the vast majority of LRM's writing. It's an earnest tone.
LRM is never earnest, because earnestness requires a conscientiousness, modesty, and self-awareness he's not capable of. LRM's version of modesty is something like "I am not egotistical, I'm just trying to understand why everyone thinks I'm so hot". He doesn't "get" why that is a funny and ironic statement.
This review, by contrast, just sounds like an unsatisfied customer.