And this interview with one of the authors of the "manifesto" ...
Critical Engineering: An interview with Julian Oliver ยท Avant.org
Oliver's final comment in the interview, which is mostly about technological transparency, is this:
"Engineering needs to break up with its own narrative that it exists only in service to science and industry. Engineering has a utility addiction and there needs to be at least some measure of a dialogic, critically productive relationship with the practice. It’s a dangerous world if engineering is not allowed to become a critical practice — a discursive practice that can own its cultural heritage and impact."