A year and some months FO here. That person obviously is very unhappy with their experience at PSA - enough to create a website and to update it just a few days ago. Plenty of people (myself included) with no 121 time made it through. Mock oral - 1 attempt pass. KV - 1 attempt pass. MV - 1 attempt pass. LOE - 1 attempt pass (with one item that had to be redone - which is allowed).
Yes you have multiple SIM instructors - kind of weird to me but at least there are more eyes on you and it's not one person teaching you possibly incorrect things. Obviously some people fail training for one reason or another. It's possible some people were done wrong by the company/examiner, but it's more likely that they were deficient on certain areas. On the MV you have 2 hours to complete it and you can fail multiple tasks (no limitation) and as long as you are deemed proficient on them in those 2 hours, you've passed. As far as the LOE you can screw up (and repeat as long as you have time) 4 things and still pass!

PSA gives you the information needed to pass - it's not like they're hiding it or anything. My experience was the polar opposite of the person on the website.