Not so. Let's go to the tape. From Matthew's Gospel:

'Some Pharisees approached him, and tested him, saying, “Is it lawful for a man to divorce his wife for any cause whatever?”

'He said in reply, “Have you not read that from the beginning the Creator ‘made them male and female’ and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? So they are no longer two, but one flesh. Therefore, what God has joined together, no human being must separate”' (Matt 19:1-6).

The Pharisees were asking him about allowing divorce. "For any cause whatever" was, as you say, the view of the Hillel school, and Shammai school, that was stricter -- but, notably, still allowed divorce.

Nowhere did Jesus endorse that view. He said NO divorce "except where the marriage is unlawful" -- i.e., no marriage at all.