This is possibly a good alternative, but it's just another way to paper over the cracks.
Wordpress is not safe. It should not be used.
A little narrow sighted, Wordpress is extremely secure and as a core platform it is proactively maintained to what I see has a high standard.
Of course there may be issues with some plugins but those are secondary choices to Wordpress itself.
Arguably the insecurity you are referring to is that of the system administrator for not maintaining the local system, if the platform isn't patched then by the same count debain isn't secure.