actually, you may change your opinion later again
> I often see people defend that they are a certain type like it's a death sentence for them not to be that type.
Emotional argumentation to protect own opinion is more common for F types as they:
1) have more doubts in own thoughts to be true (about own type, for example) and weaker logical basis to use it,
2) are more emotionally attached to the opinion, for example when this, as they think, means good IR with someone important for them or better fits to the chosen occupation, etc
On socioforum damn F types noobs were so annoyed by disagreements with their incompetent opinions about own types that forced admin to forbid to say disagreements with the type they wrote in own profile. I was baned 3 times there just for saying to people their correct types. It's often mistakes to close types alike IEI, EIE -> IEE. Without IR usage to understand correctly own types is hard and the majority never checks this thoroughly. There are many mistakes in own types, mb ~50%. People are typed by tests and by other people, - while those objectively match in <50% of cases.