Just poking around for two minutes finds counter-evidence. Let's take the two critical Wordpress vulnerabilities. He uses an archive.org page of the Wordpress package from February 7. If he actually looked in the Changelog of the Wordpress package for e.g. Jessie, he would have seen that these issues were fixed the day before in stable and two days before in sid:
http://metadata.ftp-master.debian.org/changelogs/main/w/word...
According to Red Hat, the CVEs were announced on February 4:
https://bugzilla.redhat.com/show_bug.cgi?id=1305471
So, I guess that it depends on your definition of "aren't getting fixed". But the way the author writes it, it seems that issues are lingering from weeks/months, which does not seem to be true.