Often the point they wish to make is "I am very knowledgeable about this subject too" but the point they actually make is "I am jealous of the speaker's prestig

Often the point they wish to make is "I am very knowledgeable about this subject too" but the point they actually make is "I am jealous of the speaker's prestige." One of the reasons I usually try to sneak out before the Q&A regardless of how good the speaker was...