Is the Sermon on the Mount a literary creation? A response to Mike Winger (and Michael Jones)

Pastor Mike Winger seems to think that the Sermon on the Mount and the Sermon on the Plain were actual sermons given word-for-word by the historical Jesus on two different occasions. In this video, I walk through some of the reasons for thinking the Sermon on the Mount is in fact a literary creation of the first evangelist. Along the way, I also respond briefly to Michael Jones regarding the missionary discourse in the Synoptics.

Mike Winger's videos:
https://www.youtube.com/watch?v=OhV-q2DS-bU
https://www.youtube.com/watch?v=ePKWFPESfZs
https://www.youtube.com/watch?v=-GAGA9wnJ7k

Michael Jones's video:
https://www.youtube.com/watch?v=nDzHMe7Bb60

Errata:
1. In the quote I read by Christopher Tuckett, I forgot to mention that even though he was talking about the Griesbach hypothesis, his point is still valid on any Synoptic hypothesis where Matthew is not an eyewitness.
2. In the Gruen quote, I mis-pronounce "progress". Oops!

Image credits:
https://4000jesuspictures.com/704-jesus-children/kingdom-of-heaven/otto-a-stemler-01.jpg.html
https://www.ncregister.com/blog/was-st-peter-the-greatest-disciple
https://www.getty.edu/art/collection/object/103RG2

0:00 Intro
0:55 The scholarly view
3:37 How ancient authors remembered speeches
10:00 How the Synoptic authors used their sources
16:08 A contradiction in the Missionary Discourse
18:31 The Sermon on the Mount
19:40 Conclusion