Sigh on Marcion being before Luke

The idea that Marcion wrote his Evangelion before Luke, and that Luke is dependent on him rather than vice versa gets trotted out again at r/AcademicBiblical. Some of the arguments, in this comment, are lame. The biggie is the idea that we can accurately reconstruct the Evangelion.  (Sidebar: I don't know what the OP means by "aLuke," but the would-be kewl kids throw around new acronyms that they picked up on YouTube or something.)

Re the Evangelion link about Marcion's gospel from Wiki, we have nothing firsthand, if you reject that P69 is verses from it. Among things telling against this being Marcionite is that other early versions of Luke omit 22:43-44, not just it. MUCH more about the dispute here, including a hot take on Clivaz claiming it's Marcion. The piece goes on to discuss that P75 also doesn't contain it, as well as the first revising hand of Sinaiticus, ℵ2a. Weirdly, the author does NOT discuss Vaticanus also omitting. That said, P69 is the only one to omit v42 as well, but per the "here" link, we shouldn't overread that.

Related? The Lukan dependency on Josephus. I think it likely there is some general dependency, but citing the fact that both Luke and Josephus' War have a dedication, and to a "most excellent" patron is thin.

Pytine/Poutine's follow-up to himself is thinner yet. There's good reason why Marcion might have trimmed Josephan references from an extant copy of Luke, starting with Josephus being Jewish. And, of course, trimming the genealogy fits that totally.

He does allow for some version of the Semler hypothesis (Marcion and Luke using common material) being correct, then attacks that by claiming that's "vague" as a hypothesis.

I forgot that I had previously written about Poutine being an idiot on other things, but in connection with the Marcionite "hypothesis." (Those are scare quotes.)

Per all of this, again, we don't have any manuscript directly from Marcion's gospel, per what I said above. And, given that we thus have to reconstruct given comments from Marcionite opponents who were under no obligation to reproduce his gospel word for word, this is a mug's game.

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Although not mentioned there, this idea, in some circles, has connections with the Dutch Radical School's claim that Marcion fabricated the Pauline Epistles, discussed by me here. 

And, this leads me to one final thought, which I will probably express here again in the future. A fair amount of the people at r/AcademicBiblical seem ready to latch on to new ideas like shiny baubles, without giving them an actually critical look.