Do you know whether the tempo marking is Chopin or Paderewski's?
I am doing Chopin's fingering, which in the Paderewski edition are marked in italics.
I can give you more examples of absurdly fast tempos, start at the begining. 144 is way too fast for the musical content of Op. 10 # 1.
I believe you have the markings exactly backwards, that is, Chopin's fingerings are marked in ordinary type and Paderewski's fingerings are marked in italics. Furthermore, it is not entirely clear that Paderewski's scholarship is accurate, as it contains fingerings attributed to Chopin that are not attributed to Chopin in Henle. At any rate, fingerings have an impact on the sound, both in terms of phrasing and in terms of the perception of a "beat" and are not to be taken lightly.
As for the tempi, I agree that they are difficult. Whether they are too fast for the musical content is debatable. These etudes are, in my mind, a journey and not a destination. Therefore I believe it is imperative to follow
all markings that can be attributed to Chopin, but to also realize that beginning each etude is embarking on a journey that may take a very long time to complete.
Some other points that I believe are to be considered sound like excuses, and in my mind they are excuses, but they are important to understand nonetheless. The first is that Chopin (famously) used extensive rubato when performing. I believe that the tempo should be dictated by the artistic vision of the performer, not the difficulty of the music. Also, there has been some talk about the pianos that Chopin used. IIRC both the weight of the keys and the effectiveness of the dampers of pianos in Chopins time were different, perhaps facilitating finger legato and speed.
BTW, I believe the marked tempo for 10/1 is 176.