Its the tension between short term policies and actions designed to get re elected and long term strategic policies that are best for the country.Appreciate this a tangent but I'd love to see a balanced article that evaluates her stance as I've only ever seen mockery that doesn't take her seriously and spurious evidence that she was correct.
On the topic of the "deep state", with the exception of Covid, as far back as I can remember, I subjectively only see politicians (of all persuasions) just reacting to current affairs and attempting to frame favourably.
Truss for example wanted to make far less changes than Corbyn did and it seemed the world around her just crushed her.
I expect I'll only get tit for tat quips in response if anything but it isn't a Labour/Tory/Other/Left/Right thing, it's more about how much power a government actually has to change things.
The political parties favour short term, the unelected Lords and the Civil Service provide the checks and balances for longer term planning.
The influence of unelected lobbyists supports the short term option.