The whole video is great, but particularly this: https://www.youtube.com/watch?v=_BNIkw4Ao9w&t=1063s
https://doesmysiteneedhttps.com/
There are a lot of arguments about why, even non-secret data connections need encryption. The first and most obvious is that not doing so immediately puts a target on the encrypted data.
By no means an expert but to me it seems like an oversight not to.