Agreed, juniors get a bad rap.

Something that complicates the problem is that not all juniors are the same.

Some juniors really just need to be shown the ropes and learn a few things and they can start contributing at mid-level. And then after a little bit of doing that they can start having Senior-level impact.

Some juniors take a little longer and need a little more help and that's totally fine, and they don't deserve to be ripped apart by smug seniors who forget they used to not know anything either.

And some juniors just don't really have the sauce and never really gravitate above mid-level, regardless of where their title ends up. Feel for these folks but they at times can be frustrating to work with.

But yes, to reiterate, in any case, the junior snark is hella annoying.