Anyway multi-generation estates are very well tested as being bad for society over time. Just look up monarchies.
(Not that I have anywhere near that much money, but it's the principle)
(in the case of a gift tax the cutoff is $14k and yes it applies to your children, see: https://www.irs.gov/Businesses/Small-Businesses-&-Self-Emplo... )
What am I missing?
Hence, multi-generation estates are anti-democratic.
Of course there is nuance in the extent of the effect. Some inter-generational wealth transfers are fine. Multi-generation estates wouldn't be a problem if everybody had them. And so on. But the core of an important argument against multi-generation estates is very plain. (Other arguments can and have been made as well, of course, including fairness arguments - I didn't work for my inheritance, for example.)