Yeah.. I think that's pretty well understood at HeadFi (and in the personal audio sphere, in general) by now. There's isn't a more repeated advisory than this, really. It's foregone conclusion. I just see no reason why it's continually posted.. over and over and over again (not you.. but by members many here).
YMMV, IME, IMO, "take my impressions with a grain of salt," caveat emptor, etc. etc. etc. Yes.. the only way to truly get an idea of a phone is to hear it yourself.. yes yes yes.. we know.
...moving on now.