He's really blaming the execs and showrunner between the lines I think. Saying she had to "make tough decisions" means "she fucked up". It's Netflix and the showrunner who think they need to go to the lowest common denominator with scripts to appeal to Americans, especially hard fantasy/sci-fi. So he's kinda pissed at both groups really not just audiences.
It's a shame because other works like GOT 1-5 show the opposite. Go for complex, go for the source material, and audiences will be patient for it.
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Veraxus