If the seniors are too passive to say no faster and faster, and management is absent, the junior’s going to end up being the tech lead. I’ve seen this. :) It’s

If the seniors are too passive to say no faster and faster, and management is absent, the junior’s going to end up being the tech lead. I’ve seen this. :) It’s not necessarily even bad if there is no meaningful leadership above or alongside the junior. The fast-rising junior may end up hiring developers who are more assertive and still capable.