[MattGaiser]

At least everywhere I have worked, employers have been far more worried about the opposite of employees spending time on things that have easy answers, if only they had asked.

[someweirdperson]

With this, what they mean by "grit" is: Don't ask questions, but solve things in the way I was thinking of, with no detours.

[wnolens]

Yes that is fairly common with younger engineers.

It's up to senior engineers/tech lead/manager to detect that and then give feedback, helping that engineer grow.

It's also an important quality for an engineer to be able to take feedback and correct. Grit isn't the only important quality.