If RR had said £10m then I wouldn't be so shocked,
Good quality, food production farmland runs to about £10,000/acre so £1m equates to about 100 acres if you ignore farm equipment/buildings/cottages.
No one with any knowledge of farming can surely believe that 100 acres will reliably produce enough income to be viable as a trading business. The traditional "farmer's wife" home-making, egg-collecting from the chickens, warming struggling lambs in the kitchen by the Aga is long dead. These days, in addition to that spouses generally have a job which is essential in contributing to the financial stability of a farming family. Alternatively they help run the diversification sideline of holiday cottages or other sideline.
Unless there's something redeeming in the detail which wasn't in her speech, RR is giving tax relief to the non-viable agricultural asset owners whilst shafting all others.
Just to add insult to injury, are people aware of the cause of farm land prices having gone up so much in recent years ? Large corporate "farming" businesses buying up land, that's why. Smaller farmers have had to compete with the big boys who had greater financing ability when it came to land purchases.
There's a historical reason why farmers had tax reliefs available on death. People with no prior knowledge on this matter need to do some extensive research on the economics of farming over the past century or so before they start spouting off from a politics of envy point of view online. Also consider/read up on food security issues. Have we forgotten the "feeding the nation" issues of 2 world wars with a potential third hovering ever closer given the numerous ongoing current world conflicts. Covid was a reminder but hey-ho a change of government and the food situation is all forgotten.
As for farmers causing Brexit nonsense. If the government of the day had done a proper grass roots (no pun intended) poll/analysis of the situation they'd never have allowed a referendum to take place until they'd enacted measures to appease the grievances with the state of things outside of London and the home counties/world of those who consider themselves cultured/intellectual.