Well you don't have to use that passage to know that's exactly what the Bible teaches--"For all have sinned..." Rom 3:23.

Or, later in the same letter, Paul speaks about his own struggles:

“For I know that nothing good dwells in me, that is, in my flesh. For I have the desire to do what is right, but not the ability to carry it out. For I do not do the good I want, but the evil I do not want is what I keep on doing.” ‭‭Rom‬ ‭7‬:‭18‬-‭19‬

Not a single Christian would disagree with that statement.

That's the point, it's the entrance to their sales funnel. Convince people that they're dirty and broken, then sell them the cure.

I see where you're coming from, but it's more like trying to sell people a vaccine before they die from a preventable disease (eternal death). It's hard to argue that people at risk should be made aware of the cure's existence.