At the time... yes. That's the point of an acquisition - to buy talent/skills/tech when you don't have that talent in-house (or to augment existing talent).
Now, many years later and with normal amounts of turn over? That's a different question all together.
Given that at acquisition, the android team was <30 people, and it had to be mostly rewritten before it was originally launched, and has been significantly changed since then, I think this is blatantly false ;)
Now, many years later and with normal amounts of turn over? That's a different question all together.