I’m all for a strong middle class. However, I don’t see how an inheritance tax that forces children to sell their parents farm or business to pay estate taxes is supposed to accomplish that though. If I wanted a large permanent asset-free working class I’d definitely aggressively tax intergenerational wealth accumulation, resting assured that the upper classes would easily dodge it with trusts, corporations, expatriation, or some other tax avoidance strategy. That sounds like an excellent strategy to crush the remaining middle class.

Also a 700 acre farm, which is an at most medium size family farm, could easily have a nominal value north of 10 mil even though there's no way it's returning 1 million a year net. Same for a modestly profitable small business.

that's what you said and that reads plainly to me like you are implying a causal relationship.