What you just described is called "lukewarm" and yes, it is bad.
There are other ways to be wrong, for sure. Like being a jihadist or a cult member who is dedicated to promoting falsehood. You find that in a lot of doctrinally wrong circles of people. We would call that out for its doctrinal error and lack of Biblical support, but we at least wouldn't call that lukewarm. Sort of like how the crowd in Elijah's day was hesitant of whether to worship the Lord or Baal before the fire came down from heaven and consumed the offering that Elijah placed.
As it says in 1 Kings 18:21,
"And Elijah came unto all the people, and said, How long halt ye between two opinions? if the Lᴏʀᴅ be God, follow him: but if Baal, then follow him. And the people answered him not a word."