Totally agree this is a problem, but I'm very much minded to think that a proper farming policy would include such distortions in the planning. The current government seem to think that putting the boot into farmers at every opportunity is just fine (classically, they are very conservative), the latest being the sudden ending of SFI. Let's sit down and have a grown up conversation about it all, including food security, sustainability and the best ownership models, rather than pissing around with inheritance tax.
In truth, my concerns are primarily around business property relief, since I think it is there that the damage will be both more significant and less visible. Many businesses carefully built up over years will have no option but to sell off a chunk to private equity to pay the tax liability. Is it a surprise that the gov come up with such policies when Rachel Reeves thinks that the finance industry is going to fire up growth [1], when they are the rent seeking parasites that are suppressing it. The fox has been invited into the hen house and getting to dictate policy.
[1] https://www.gov.uk/government/news/chancellor-backs-britains...
There are numerous ways of avoiding inheritance tax, and therefore not having to deal with business property relief.
If the business is going to be a going concern for many years, then proper estate planning should be part of any careful running of a business. Passing it on 7 years before death is the most obvious play; yes, actuarially there will be some people who die before the 7 years have passed, so doing it early is important if continuity of the business is important.
Of course, which is why it's all so silly. It proves to be a headache that gets in the way of actually productive activity, and I know this from first hand experience.