I love the relentless Witcher 3 comparisons when other than them both being RPGs they're nothing alike at all.
Hell Witcher 3 is hardly the paragon for gaming that people make it out to be, sure it looks great but has some pretty serious flaws as it is.
I'm enjoying FO4 so far, I'm not far in as it took all day to get delivered but I really don't see where the complaints on this scale are warranted, most of the problems are controls related and that's a pain in the arse but it's not like it doesn't work. No crashes, one bug, looks decent, runs great. By modern standards that's a damn fine release.