I think that if you are not a day trader, taking a short position on BRK is a dumb risky thing to do. Puts, calls, whatever.
Not nickels. Pennies in front of a steamroller.
And if you *are* a day trader, why would you even be looking at Berkshire?

Another possible perspective: Taking a short position on BRK, thanks to it moving quite reliably in a well defined Price/BV range and it therefore being more predictable, can be less risky than taking a short position on another stock, because of a very high probability that it's Price/BV after breaking out North from that range will return into it by it's price falling.

That applies only if you are not a day trader, as it might take a little time (days/weeks/months) for that "Normalisation" of Price/BV to happen.

That at least was my reasoning for buying puts.

Of course it's more risky than taking a long position where continuing earnings work in your favor, but that's only important for multi-year time horizons where that has a far larger effect than when trying to use an unusually high valuation to make a short/medium term profit.