I don't see what is so egregious about a word that changed/evolved its meaning over time. There are plenty of such words in our vocabulary. The language is a living thing.
For example: egregious now describes something outstandingly bad or shocking, but it originally meant remarkably good. It comes from the Latin egregius, meaning "illustrious, select"—literally, "standing out from the flock," from ex-, "out of," and greg-, "flock." Apparently the current meaning arose from ironic use of the original.
https://windowthroughtime.wordpress.com/tag/original-meaning-of-egregious/