I tried to gather some more information about the matter and I've been told that Cortot, although he recommends to practice the accompaniment legato without pedal, encourages to use the pedal in performance, he suggests to pedal every semi-quaver, in some sort of trembling.
Anyway, some pianists choose to radically pedal like on every half measure and I find it sounds nice (question of taste probably) and I wonder if the blurring dissonances are not Chopin's intentions, obviously it changes totally the character of the piece, making it something "impressionistic", which is not necessarily anti-Chopin as far as he wrote some other very blurry-dissonnant pieces like the preludes op.28 Nos 2 and 4, for instance.
Your advice?