I take issue with some of the points regarding the GPL license. The author says that "GPLv2 has prevented the integration of of open source technologies like DT

I take issue with some of the points regarding the GPL license. The author says that "GPLv2 has prevented the integration of of open source technologies like DTrace and ZFS in Linux." However, surely this is also the fault of the CDDL rather than the GPL alone. The CDDL license was written after the GPL, and according to some sources was specifically designed to be GPL incompatible.