Many deb-users don't just know what they are lagging. They believe the FUD the oldtimers tell them on forums.

And more importantly, that MITM-security-vulnerability seems to be totally ignored time and time again in all deb-based systems. Many Linux fans takes security seriously, except when it comes to deb, they just overlook it totally and refuse to see the huge flaw in the practical security policy of deb-systems.

There is good technical reasons deb-systems to transfer to a rpm-system. But it would be foolish rpm-systems to change to inferior deb-system. Most everyone still agree, using only one common distribution software packaging format would benefit the whole Linux ecosystem.