I find MBUK to be total guff, but that seems like a strange reason to throw your toys out.
It’s possible that someone had a valid criticism of the bike and it’s something Marin are going to address. My experience of Marin was that they were a very small rider focused company. They were always at pains to point out that they were a tiny company compared to the likes of Trek or Specialized and didn’t have anything like their budget for r&d or pro riders. So maybe they value feedback and respond to it where possible.
Years ago one of their reps asked me why the quake was selling so badly and I told him honestly what I thought was wrong with it. I was blunt as possible. He asked me to write down the geometry changes I was suggesting, which I did. A couple of years later the new quake came out with almost the exact geo I’d specced. Do I think they changed it on my account? Absolutely not. Is it possible someone saw it and took it on board? I guess so. The bike was better but still awful.