"Posts" forever and always.
Coq: still going strong after 33 years
I am not sure your examples make the point you think they make. Names don't seem to matter.
Soylent is a "Torment Nexus" style name, which is bizarre (and yeah, probably bad). (The "Torment Nexus" meme is: Scifi writer: I have described the Torment Nexus as a warning. Do not build the Torment Nexus. Company: The Torment Nexus sounds like a great idea. We are just about to ship our MVP of the Torment Nexus!)
Coq unfortunately sounds like genitalia to an English audience, and there are tons of hang-ups (for good and dumb reasons) about referring to genitalia in polite company. It's very different level of cultural hang up than "silly euphemism for a fart". Also, for the record, it's a tool from a French team and named a French word that has nothing to do with the English genitalia word that it sounds like. (It is related to the English poultry homonym and why English even has such a homonym.) Not all programming needs to be Anglophilic or consult with English speakers first before naming all their tools.