Yep, several statements here:
https://archive.ph/kM3wc
Two contradictions that jump out: Firstly, they take a pretty hard tack towards "This was all two seconds from being fixed if only you'd had patience for our lack of experience" as the explanation for most issues we could already tell were going on. This is a totally valid point to make... if the business were at most a handful of weeks in. Almost a year later, though, and there's not much room to doubt Frost that the business was being inexcusably impacted. In the real world most businesses die within single-digit years of founding, so anyone who advises small businesses leads off with insisting that any employee who can't hang in their role after a month or two to settle in needs to be moved or cut from payroll. Just asserting that the power of friendship will let Nick and co defy gravity this time doesn't explain how they get from here to there (although the skycrane of quid pro quo, which didn't get mentioned, could make up that difference).
Which leads to secondly: Framing the discussion as being about Frost's personal misunderstandings doesn't hold water either, because he's not the only one who left. Yes, of course he sees the interpersonal drama behind how Second Wind's issues developed differently than Nick does. That's how interpersonal drama works. The question that matters is about the truth of the reasons for the disagreements, which, since we now know can't be just made up by Frost, are largely either not discussed or given the above lame excuse.
Overall it's got a pretty heavy stench of "Second Wind has investigated and cleared Second Wind of all wrongdoing", I think. I guess we'll have to wait and see if things hold together moving forward or if a second wheel comes off at some point.