And, FWIW, I can't tell you what a relief it is when you do a job that isn't so dependent on British weather. Having watched the first series of Clarkson's Farm (sorry), his absolute frustration at not being able to plant anything for two solid weeks because it was pissing down was as genuine a thing as I've ever seen Clarkson do. It's no wonder that the suicide rate amongst farmers is stubbornly high, as it might feel to some as if it's the only thing they've got some agency about.
tl:dr - this isn't saying that farming subsidies are immutable & incontestable, but if you were to fade them out, you'd need to make sure that whatever replaced the current systems could deliver better outcomes in many spheres (environmental, societal, continuity of supply at whole-population level, etc) at lower overall cost. Purist ideologies tend to be more often fundamentally flawed than ideological compromises that muddle through (somehow) year after year with something that actually Isn't Too Shit.