Christianity doesn't allow for a spectrum of devotion. You don't know a persons heart and judging their devotion by a system of standards that you set up to judge them by, that has no connection to what God uses, is disingenuous.
I don't doubt it makes you feel real good to set up conditions for others, judge them by it, and find them wanting, therefore hypocrites. I also don't doubt that you feel that it gives you plenty of justification to not believe yourself.
Been there, done that.
The only problem is that it's a house of cards. It's not going to stand when you finally come face to face with God.
We specifically are proscribed from judging another’s salvation.
We may judge their behaviors against the standard of God’s Word,
but the judgement of salvation is up to God/Jesus, as He is the only One that knows the heart of the individual and what that individual was given to work with.