Weed or Wildflower? Which is Which?

I always tell punters one man's weed is another one's wildflower. I'm not sure that's strictly true in most cases. Problematic plants? I know dandelions and plantains can be a struggle for some in the garden, for example, despite their - to my mind - obvious allure. Bittercress, dock and nettle - weed, I think, while acknowledging that "weed" isn't all bad. I have a designated nettle patch that caterpillars much through. And - really - what's the difference between Rumex obtusifolius (bad),Rumex acetosa (good) and - my favourite dock -Rumex hydrolapathum (fantastic). I guess it's a question of degree. We have a little video about making wildflower meadows, in which I made the mistake of saying weed out any thistles. Well, I say a mistake - it's not; thistles are very efficient colonisers and a real pain in a new wildflower meadow. That's not to say they aren't good plants for pollinators and can be very pretty - as was pointed out to me in no uncertain terms (!) - but they can take over. Diversity is what you're aiming for, and a field full of thistles isn't that. Anyway, Birdsfoot trefoil and Self-heal would not even hit my top 50 of "difficult" plants. We must have sold hundreds of kilos of BFT and Self-heal seed over the years, and thousands of plug plants. They are pretty, small wildflowers. Self-heal is in our flowering lawn mix and Birdsfoot trefoil looks like a native snapdragon. Good plants for a variety of pollinators, BFT particularly good for some bumbles. I digress. The point is, according to Farmer's Weekly, that these two plants are on the naughty step. They are, apparently, "unwanted weeds", albeit good weeds insofar as they improve fat levels in the lambs that eat them. Hurrah! This is really irking, but an interesting insight into the psyche of Farmer's Weekly readers. Many farmers still treat anything not the right sort of grass as a weed. This has got to stop. I can understand farmers antipathy towards species like black grass and dock. But Birdsfoot trefoil and Self-heal? For starters, plants like this are good for livestock. You can buy grazing grass mixes which include them. They also have really important ecological value and their numbers are declining. Perhaps Farmer's Weekly should start to call them herbs, if they can't bear "wildflowers".