Here's my opinion, FWIW. Review #1 - poor bedding from the factory wouldn't surprise me a bit. However, I take every gun I have and re do the bedding, even if it just came out the box. Typically the factory bedding compound sucks, and you can do much better with Devcon or Acraglas Gel.
Review #2 - he's using a lead sled, so I would personally be reluctant to put a lot of stock in it. Who knows if he tried a different scope or not? Hard to say. It's the internet.
I guess it depends on how much you like the rifle? Every Winchester I've owned has shot very well. Could have been a bad run of barrels, bad crowns, hard to say. If you are comfortable bedding the gun and maybe having a crown recut there probably isn't a lot to worry about.