Frankly, I think it's on you to lay out your argument in full rather than assume everyone is privy to your thought process.
You seem to coming at this as if the law is a purely mechanistic thing that can quickly resolve disputes, overlooking how these things play out in the real world, like Oracle v google going on for a decade or the even longer litigation involving SCO and IBM.
I mean, what makes you so sure the court is going to give you a quick judgment on the infringement, or that it's going to agree with you about the size of code fragment that that is sufficient to infringe? Perhaps if they do verbatim copies of some unusually original algorithm you have developed, but given the fact that Copilot enthusiasts mostly laud it for it's ability to generate decent boilerplate/housekeeping code, a court might well find that the similarity to your code isn't infringing because the code in question doesn't do anything very distinctive. Commercial code shops are risk averse, it is true, but they also tend to have house styles on everything from variable naming to formatting that would further muddy the waters.
I feel a lot of your argument is begging the question (in the legal sense of assuming your conclusion) without considering whether the court will agree your code was infringed upon. Surely you can can agree that sufficiently small code fragments won't meet this threshold because they're too basic or obvious. Because your whole argument here rests upon that assumption, it comes off as a wish fulfillment scenario where Copilot disappears because nobody likes the risk calculus; your stated goal of 'making Copilot a dead product' seems more emotional than rational.
In reality it will take you a long time to get a result, and if enough people find Copilot useful (which I suspect they will), legal departments will adapt to that risk calculus and just figure out the cost of blowing or buying you off in the event that their developers carelessly infringe. If it sufficiently improves industrial productivity, it will become established while you're trying to litigate and afterwards people will just avoid crossing the threshold of infringement.
Honestly, this exchange makes me glad that I don't publish software and thus don't care about license conditions on a day to day basis.