Sorry but what are you talking about?
Buffett himself doesn’t want to grow Berkshire by acquisitions or he doesn’t want his common stocks to grow by acquisitions? I would argue both of those are obviously wrong.
For example, Buffett says Kraft is still a great business because it has a high ROTA. But it paid way too much for Heinz and so it has been stuck for a decade or so.
OXY, KO, MCO, KR, KHC they all acquire…. a lot.