When you're not good at anything, you think everyone else is faking it. When you're gifted and you don't challenge yourself, you think you're good at everything. But, if you're gifted and challenge yourself regularly, you learn to acknowledge what you do and do not know. Once that happens, you claim the mastery that is your due, respect it when you see it in others, and lose patience with those who constantly want to dispute the validity of what you've become. You learn to despise the word "opinion", because you constantly have it thrown in your teeth by people whose ego is incapable of acknowledging that expertise exists at all, let alone acknowledge that you might have it.
At least, that's been my observation and experience. It's part of why I like volunteer work. When people are benefiting from your brilliance and watching you let others lead while you learn from them, they're less inclined to constantly challenge your capabilities, and more pleasant to be around. Purely social environments like bars and parties on the other hand, are a psychologically draining environment where bullshit flies, assertions are never compared against objective reality, and just listening to people talk threatens to make you stupider by normalizing a lack of rigor and discipline in acknowledging that you have areas of ignorance that no inherent brilliance can overcome.