Phrasing this like "well Google must know best because they employ some subset of the people that worked on JXL" when the entire rest of the industry has been very overwhelmingly pro-JXL isn't very convincing. Also my point wasn't "Google doesn't know what they're doing", it's that internal politics at Google are probably a factor in them basically being the only opposition to a standard that has been gaining support significantly faster than WebP or AVIF (both much older formats at this point) ever did.