No. There is no greater accomplishment humanity could achieve than to make itself obsolete.
Steps:
1) quantum mechanics
2) semiconductors
3) AGI
4) the machines take over
We're about 100 years into that progression, and we're well into step 2. How many years do we have left? Another 100?
The machines are probably not "foolish" enough to announce themselves to the rest of the universe.
No. There is no greater accomplishment humanity could achieve than to make itself obsolete.