Some people have an Ego which will not tolerate anyone disagreeing with them on any matter, no matter how small and/or trivial.
They go on Ad Infinitum when the first challenge appears to what they say, what they do, what they think, ...
I think their biological clock keeps on ticking, but the maturity one stopped when they were about 12 years old.
So they pout, show Arrogance, belittle others, just to salve that black-and-blue bruised core of their Ego.