Ramban’s attitude to the legend

Ramban wrote in the book of the debate [in the writings of Ramban Ha-Viqo] and Zedekiah:
‘And now I will explain to you why I said I do not believe in this. Know that we have three types of books. One is the Bible, and we all believe in it with complete faith. The second is what is called the Talmud, and it is an interpretation of the commandments of the Torah. There are 313 commandments in the Torah, and there is not one that is not interpreted in the Talmud. We believe in it as an interpretation of the commandments. We also have a third book called the Midrash of R’l Shermonish [= sermons], such as if the hagmon stood up and gave one Shermon and one of the listeners would have been pleased in his eyes and written it down. And this is the ss. Whoever believes in it is good, and whoever does not believe in it will not be harmed… And we also read that book. The Haggadah means to say, “Rasionamanitu” [= a story of things], meaning that they are nothing but things that a person tells his friend.’
Are his words as simple as that?
Regards