According to ChainCatcher, after reading two books about the Bitcoin block size dispute in the 2010s, "The Blocksize War" and "Hijacking Bitcoin", Vitalik published an article to put forward some of his own thoughts on the Bitcoin block size dispute. Vitalik said that when he personally experienced the Bitcoin block size dispute, he usually stood on the side of the big blockers, and his sympathy for the big blockers was mainly concentrated on the following key points:
One of Bitcoin’s key original promises was digital cash, and high fees could kill that use case.
It does not believe in the “meta-level” stories of small blocks.
The Segregated Witness proposal by the small block party is intended to increase the block size slightly, which is overly complex and unnecessary compared to a simple hard fork block size increase.