You do need HTTPS to protect mundane content: Saying otherwise is very short sighted...
You might not care about the content, but the way someone, somewhere, is accessing it, does offer a lot of "value".
It can allow a watchful eye to either accuse the reader of being outside the norm, criminal, not respectful and whatnot (reason why librarians fought hard for the right to lend books without giving the list to the state!) or allow them to caracterise, profile, target a person over time for many different reasons.
Thus everyone should have the to right to read anonymously and willingly.
Witholding this right from others is being complicit with opressors.