The "good" news is that patent trolling is, more or less by definition, a get-rich-quick scheme - they want to make a lot of money by sending a few dozen letters every year. It does not attract people who are interested in anything approaching due diligence.
But also, the whole point of all of this is to get the trolls to leave Cloudflare alone, right? This is a very deliberate strategy; this announcement says "don't try that stuff here ... but feel free to try Cisco or Juniper instead."