Paul is concerned that we follow him and not just follow the Lord Jesus Christ. Is that right? Should he be making himself our example in behaviour and not rather Christ? Yes, this was part of the calling of an apostle.
Occasionally you read of, or you hear of, some preacher who earns a fortune, but the apostle would never have earned a fortune even if he had lived in another age and he had taken up his right to be supported. Utmost carefulness and modesty is required on these things. So we instantly suspect a person who wants to take home a lot of money as a servant of God.