I don't have more context to add to this since I'm not from Europe, but the author is associated with a centre-right political think tank in Europe, so read this piece with that critical piece of information.
Although this flew well below the radar for me in incendiary language (though very colorful language was present), it was light on very specific details. Example: clear claim being made that small farms are being shuttered, but no detail provided on how the CAP limits being reduced are causing that. These are simply two facts strung together closely enough to imply a correlation. But like, name one such farm that is being shut down for going over the lowered CAP limits.