In my opinion, there's entirely too much context missing from this for us to say whether or not what is quoted there was totally reasonable.
Had the employee even brought that up to the manager before? Had they had the idea for a long time and didn't bring it up? If so, why not - does the manager foster a culture where collaboration isn't encouraged? If that's the case, does the manager not do that simply out of ineptitude, or because that's the same culture coming down from above him/her? Maybe the individual just had the idea that morning? That week? The very moment it came out of their mouth, even? Has the manager had a stellar tenure up to that point, or a rocky one? How severe was the issue pre-fix that it warranted this termination? I could go on and on.
Point being, two sentences saying, "An employee had an idea and Musk fired his boss because he didn't know about that idea," is typically not going to be enough for us to say, "Oh yeah, that was a good/bad call".
Had the employee even brought that up to the manager before? Had they had the idea for a long time and didn't bring it up? If so, why not - does the manager foster a culture where collaboration isn't encouraged? If that's the case, does the manager not do that simply out of ineptitude, or because that's the same culture coming down from above him/her? Maybe the individual just had the idea that morning? That week? The very moment it came out of their mouth, even? Has the manager had a stellar tenure up to that point, or a rocky one? How severe was the issue pre-fix that it warranted this termination? I could go on and on.
Point being, two sentences saying, "An employee had an idea and Musk fired his boss because he didn't know about that idea," is typically not going to be enough for us to say, "Oh yeah, that was a good/bad call".