> I refuse to call them by the name "the company that makes snapchat"

Renaming from "Snapchat, Inc." to "Snap, Inc." isn't quite like "the artist formerly known as Prince": I feel like everyone would recognize who you mean if you said "Snap" with even minimal context, and it doesn't really seem that wrong to continue saying "Snapchat" (it certainly doesn't seem as awkward to me as the Google/Alphabet reorganization).