Of course, not all Protestants are willing to “move with the times”, so to speak; . . ."
No, they all "move with the times". A given generation may refuse to abandon what they've been taught but Protestant and Protestant derived groups are all just Pop Christianity as spread by the mass media of the day.
Each generation latches on to whatever makes it easier for them to go along to get along with Pop Culture. It's been that way ever since Luther and the only thing that's changed is how fast follow-on generations openly accept what their parents refuse to accept.
Jesus was “Pop Christianity” to the Pharisees, who never thought they deviated from God, even though they added to the Word of God with their traditions...