The Second Thought video is indeed a tertiary source, but the 1Dime videos has all sources in the comments. I understand that people don't "like" it as a source, but that doesn't invalidate them either. They are essentially longer form content explaining what I said in greater detail. If someone came in and said inflation was due to the flat earth, then we can dismiss those claims. Any "sources" would not be backed by economic or scientific theory. This doesn't change based on the format of the source.