Jesus describes teachers who love greetings in the marketplaces and to be called Rabbi. In an honor-conscious society, such public recognition could visibly confirm a person's rank and reputation.
The issue is not that greeting someone or using a respectful form of address was inherently wrong. Jesus targets the desire for public religious status.
Marketplaces and other public spaces were places where social relationships were visible. Formal greetings could acknowledge rank, while titles associated with teaching marked a person's recognized authority. 'Rabbi' literally carries the sense of 'my great one' or 'my master' and developed as a respectful designation for a teacher.
The precise later institutional use of rabbinic titles should not simply be projected backward in all its details. In the Gospel setting, the title plainly functions as an honorific associated with religious teaching.
The cultural background shows why Jesus groups greetings, titles, prominent seats, and places of honor together. They are different expressions of the same appetite for recognized precedence.
His teaching redirects greatness away from public acclaim toward humble service. The problem is not respectful language itself but making religious identity a platform for status.