You are basically discussing the conglomerate discount. It’s a very complex subject.
Farming with MKR money to generate a yield doesn’t make sense as MKR holders can do the same more efficiently.
But adding liquidity to something that helps the DAI ecosystem create good value as there is a synergy with our main business.
Also having cash aside to endure bad times is smart. It would be not smart to let it be idle if we can make a secure yield on it.