Intel has had literally months upon months to test and stabilize their microcode and kernel-side patches for Meltdown/Spectre... but it seems like Intel just doesn't give half a shit, if they're having major issues now.
Intel's actions seem to shout that they have cared far more about releasing Kaby/Skylake X and Coffee Lake in short order, as a response to Ryzen/ThreadRipper, than actually really digging into fixing their major security flaws. Their actions speak of them preferring to keep their market and mindshare over actually fixing any security issues.
Intel is still so deeply entrenched that they likely believe that they can get away with their lazy approach. They make millions upon millions, if not billions of dollars ~ why should they give a shit, when their monopoly and half-hearted attempt at a solution will get them by? Intel is being strangled by their shitty management, seemingly...