Too Rigid to Be a Saint?

In these days of unclear teaching about clear truth, it is possible to say that a person on the road to publicly declared Sainthood might not be the culture's, including alas, the modernistic collaborative Catholic Culture's, cup of theology.  Suggesting that some persistent sin, as detailed in the Catechism, can lead to hell is considered too harsh, too "rigid". So is it possible that someone say, like the Venerable Archbishop Fulton Sheen, could find his public path to declared Sainthood a rough one. Something to consider on Ordinary Old Catholic Me.