Yup I agree.
Those be sketchy. I'd read those and be like "okay well scratch them...". Once you lose the trust that they are honest it's hard to gain back, even if their work IS fabulous.
eta - I guess I was fooled, I replied to them! Seeing 1 off, sounds great. But it's seeing them all together and how similar they are that is the sketchy part.
eta2 - Someone else (nice ice) is also mentioned in all the reviews.
Those are the ones that got my attention too. Too used car salesman (especially the last one).
I think in some corners of PS people have moved beyond customers and have become fans (almost the way some musicians get fans) and/or think of the vendors as family, and are protective of them. It results in certain vendors bring actively promoted above all others (this may be more true in some specialty forums than others). My stalking experience was creepy but since I like the value and quality of the vendor's stock, I've chosen to let it go. I was more creeped out about the tattling than anything else. It came after many accusations that I was trying to destroy someone's reputation...even though that was not my intent. In the end I was informed that only glowingly positive reviews are welcome on PS, and that if you have a negative or even just slightly so-so experience, you should just not talk about it. I think when people get that emotionally attached, objectivity gets compromised. Plus, best repeat customers get VIP treatment that others won't enjoy (and deservedly so - but that won't reflect everyone's experience).