There's definitely plenty of holes in the theories of GG&S, if that's what you mean by "academics have problems with it" === "it is not a perfect theory."
But overall, it seems most of the points hold more than enough water to be worth merit. None of them perfect, but vastly better than throwing the whole thing out.
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Also, holy crap I'm giving you the benefit of the doubt here, but the first few threads I went into were... blatantly far left (as Reddit tends to be). Seriously though: spiraling into tangents of communism, your classic woke/sassy "dunk" lingo, clearly had some external bias bone to pick. I'm not sure r/badhistory is a community worth considering the acme of academia, only based off my short interactions with it. But maybe the worst just came up first?