The fuck are you on about
The headline is not what the article says at all
written in a memory-unsafe language
The report concluded that most critical open source projects potentially contain memory safety vulnerabilities. This is a result of direct use of memory unsafe languages or external dependency on projects that use memory-unsafe languages.
Emphasis on “potentially” is mine
Quite a lot more than 55% of projects have an external dependency on projects that use memory unsafe languages. Aside from a certain amount of Go or Rust projects that manage to avoid any dependency that drops down into C to expose some library at some point, I think it’s all of them.