Re: All Pop I stars have earthlike planets
All totally unproven; your assertions need to be backed up with data.
All Pop I stars may have planets (possible within the statistics we have) but there is not enough data to say that any significant fraction will be earth-like. Most detected are gas giants (because they are easier to detect).
How the hell do the asteroids get the escape velocity from the solar system and target themselves to Proxima b, which is a minuscule fraction of the sky, and not even in the plane of the solar system.