...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.