"There are probably more annoying things than being hectored about African development by a wealthy Irish rock star in a cowboy hat, but I can't think of one at the moment"

This quote by Paul Theroux is a humorous way of expressing his opinion on the topic of rich stars lecturing on African development. He is suggesting that it is a bothersome experience to be lectured on this topic by somebody who is wealthy and well-known, and who is using a stetson. He is also indicating that there are probably more bothersome things than this, however he can't think of any at the minute. This quote is a humorous way of expressing his viewpoint on the topic, and it is likewise a method of highlighting the disconnect between rich celebs and individuals they are attempting to help. It is a reminder that celebs need to be aware of their opportunity and utilize it to help those in need, instead of lecturing them.