I disagree with this assessment. Theo is nerdy and, yes, he has a healthy ego. But, he provides insightful commentary on his channel and he works very hard to present what he believes is the truth. Compared to many YouTubers, whose content is vacuous, Theo is mostly the real deal.
It's curious how so many people get triggered by a smart person saying what he believes to be true. Yes, he is pretty amazing. Yes, he is rarely wrong. No, it doesn't affect you or me in any way because he is not in competition with you. Go do something else if you don't enjoy his takes.
I don't get many programmer influencers in my feed that deal with newsworthy relevant stuff. Theo is the least wrong and most humble one in my perception.