Some people are masters at finding the difference.
Their life's ministry is to show up, figure out what the group believes by asking questions or having conversations until they get to the one thing that they believe different from the group.
Their heart is purposefully looking for the difference.
They may think they are on a journey of truth. In reality, they are in a hot-air balloon of pride.
If you read were to read 1 Corinthians 8:1 to this type of person:
Knowledge puffeth up, but charity edifieth,
They would find a way to convince you that what it really means is: "Knowledge EDIFIETH, but charity PUFFETH UP."
They can't seem to get away from their superior knowledge. This causes their heart to always be looking for the 1 thing that is different.
It's like they think the Bible says: "KNOWLEDGE never faileth," when in reality it actually says: Charity never faileth.
Folks, there will ALWAYS be a difference to be found. But a mature Christian will rejoice around the 2-dozen correct, foundational doctrinal truths the group believes.
If there is an obscure idea, a fringe belief, or a different take on something that is not a foundational truth, a mature Christian exercises charity. An immature Christian, on the other hand, can't help but make the obscure, the fringe, or the different as FOUNDATIONAL.
1 Corinthians 13:11 When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.