This is basically a non story. The headline should read. "Paid Intel researcher... finds way to compromised ANY CPU running a custom hacked Kernel. " This is all tripe. Side channel attacks are possible ON any CPU with any form of cache speculation even if its been patched in hardware to not give user land software kernel access.... if you run a modified kernel that has had its permissions bits tossed and flipped.
One of the PhD students involved in the paper had funding from Intel, that's it. There is absolutely zero evidence of anything shady going on on. Don't try to turn this into anything that it isn't. The whole thing should simply be "New AMD flaw found, already fixed". Simple as that. The only reason to even mention Intel involvement is for the purposes of mudslinging when it isn't even warranted.