The large majority of users cannot make well informed security risk decisions like this. Engineers should do the right thing and help these users. In the same way, I can't make some meaningful risk assessment for using a bridge or riding an elevator. Civil Engineers don't just get to say "well, if users are concerned about the safety of my bridge then they can make a different choice so I'm going with the stuff I personally like working with." Why do Software Engineers get away with this?
Outside of small hobbyist projects, the industry has an obligation to provide users with safe software.