Perhaps I should walk back a little: hate is a string word. I enjoy the process of reviewing regardless, but because of all the other concerns that you mention it is hard to know how what you review will match what players get.
I reviewed Shadowrun 5th Edition right at release, and it had some major errors (including the omission of PDF bookmarks) that were fixed by the time I woke up.
And that's in tabletop roleplaying, not even video games.
It definitely comes down to some industry differences as well. Most of my prerelease reviews focused on working with a publisher or media site, while I generally review released stuff independently (or, when I was still a featured reviewer, through DriveThruRPG with publisher comp copies). Syndication gives more touchy political issues and makes you think about how your writing reflects on the people paying you, which I don't personally like.
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