I do worry about the junior talent in the future, yes. This attitude it part of why Juniors aren't sufficiently trained into future seniors. Then everyone wonders where the seniors went.
They don't grow on trees.
Always so weird to see people threatened by something so trivial. I like offices! Sorry that frustrates you, pal.
And yet, you're threatened by an empty office, which is also trivial.
Introverts and extroverts will never understand each other. This entire thread is pointless.