...The concept of fungibility goes to a kind of blacklisting of coins that cause some coins to be less spendible than others, and there is no fucking blacklisting going on through segwit or through lightning network...
To be a little more concise and make this statement clearer:
Fungibility equates to indistinguishably and nothing more, blacklisting is a method.
Blacklisting cannot be applied to anything that is fungible.
I have been largely painting this fungibility topic with broad strokes regarding what seems to be a topic that attempts to spread FUD rather than treating an actual serious bitcoin issue which fungibility currently is not such a topic, even though surely there are likely going to be attempted bitcoin fungibility attacks in the future - whether informationally or the employment of various methods, like you suggested blacklisting as one possible method that may not be easy to carry out in bitcoin if "people-empowering" tools continue to be developed and evolve.