We claim that Matan Torah was/is the ultimate proof of the veracity of the Torah, because unlike what we observe in other religions, where G-d never makes direct contact with the people, at M"T G-d spoke directly to the Jews.
That made me think, since:
- G-d loves His chosen people and only wishes good for them
- at some point at M"T The Israelites have reached the level of prophecy anyway
- the event was miraculous anyway it could last as long as G-d wanted
- the scarcity of clear commandments from the source has led to numerous misunderstandings, quarrels, and incidents in the wilderness and after
G-d could easily use the moment to pass the whole written Torah (or the Oral also).
Why was M"T limited to two commandments only?