Hi 8_octaves,
I am a believer in the E-natural. I think the choice between E-flat or E-natural might depend on the interpretive sensibilities of the pianist, with the original E-natural not being a notation mistake by Chopin. As you rightly observe, Chopin was ultra-meticulous in his notation . . . if anyone thinks they can find a notation mistake in Chopin's hand, I wish that person luck because it probably won't be there. I grew up in the pre-internet days - any research back then needed a lot of time and effort (and real research today still needs all that time and effort) so I was selective and focused on Liszt and somewhat on Beethoven. I'm not a Liszt expert, however, I am more of a Liszt believer, and I studied and researched for enough hours during the course of enough years to confirm that I was on the right track pianistically - and that there may be many things casually reported about Liszt on Wikipedia which are not necessarily true.
As with the notion that Liszt's pianistic achievements were inspired by Paganini. Liszt said that, but according to one source it wasn't a candid statement. Chopin's piano playing was the catalyst for Liszt's achievements but Liszt did not want to admit this publicly - this is according to an interview with Moriz Rosenthal from the 1940s. The article with the interview states that this is something which Liszt confided in to Rosenthal. True or not, it is there in the source.
Something about Chopin you may know: the original initial tempo marking of Etude Op. 10 No. 3 was Vivace.
One gets the impression that Chopin could be almost as highly variable musically as was his admirer Franz Liszt.
Rehi Michael!
Thank you for your reply! Very interesting you mentioned Chopin's diligence, too. But profane circumstances could be an obstacle to us, as we can see, e.g., in the manuscript of the op. 53-Polonaise, where there is a simple and profane HOLE in the paper, so that one in such cases can only estimate by comparison, by the help of copies, by harmony and music-theory, calculate, or try to prove by probabilistic methods whether there was an accidental written or not. And there are mice, which like to nibble on old documents very much, and fungi, too, and book lice, sometimes!

They shouldn't do that!
As far as Liszt is concerned: I don't know very much of his works. I like some of his Rhapsodies, ok. And I have 2 biographies as pdf, one being the Goellerich. But it's so extensive, I still haven't read it completely, only searched through it, if special topics are of interest to me, and if I presume that I'll find statements in it.-
The "old" Niecks-biography of Chopin I have, as pdf., too. But since today there are doubts about its reliability in some points, it brings me to another point you mentioned:
The reliability of WP-articles. You pointed out that in the Liszt-area, there might be some not-necessarily-true articles in it: The same, I think, we could say of some Chopin-info we get from the WP: There are, maybe, some good ideas, but they will make further research necessary, for example, the interesting statement that Elise Gavard could be Chopin's daughter. (And that she is the only person to whom TWO single works were dedicated: a waltz and the Berceuse. It may be interesting, that another person, Emily Elsner, could be the second one to whom two works were dedicated, but this would have to do with an A flat major-waltz and an E-flat major piece in the Henle-Edition, and whether the E-flat-major waltz was 100% correctly assigned to Chopin or not. )
Reliability...is often an important point, I think!
As it's with the tempi of some works. Today, there aren't, at least as far as I know, only activities to play works (e.g. the op. 10,3 Etude, or Schumann's "Träumerei" ) faster, but there are activities ("Tempo Giusto") , to play works 1/2 SLOWER, too, e.g. the op.10,1-etude, because of metronome-based discussions which are fought in my opinion VERY hard, by the interested participants, if I remember correctly, and sometimes it's very amusing to read the quarrels!
I don't know at all. I'm just a bookworm.

Very cordially, 8_octaves!