I think the shares are relatively cheap here and Berkshire should be buying some now ($210 per B or below). Berkshire's recent share buybacks have effectively decreased the diluted share count, which is the first fact I analyze when judging buybacks. If Berkshire was a more aggressive buyer of its stock when markets were down, that would be favorable to me. For example, if Berkshire bought back $10-$50 billion of stock in March-June 2020, and consistently bought back during down quarters / years, I think the market would award the company with higher multiples.
A 2% dividend wouldn't change my opinion.