Perl uses utf8 (not to be confused with UTF-8),

It is so sad to see apparently intelligent men make such stupid statements.

Of course 'utf8' will be confused with 'UTF-8'. Search for the former using any search engine or on any reference site, and all you will find are references to the latter.

an encoding whose charset consist of 2**72 characters.

Wrong! At best this mythical 'utf8' stores 2**72 ordinal values that could be mapped to a charset.

But as no such charset exists; nor any that contain even 0.000000000000003% of that stupidly huge number, makes the entire thing totally fallacious.

Numbers are not characters. They are just numbers.

Those numbers can be code points that can be mapped to characters. But you cannot map a number that is greater than the number of characters that exist.

And a 'character' has a very clearly defined meaning. Even in the standard you keep (mis)quoting: Unicode, in intent, encodes the underlying characters—graphemes and grapheme-like units—rather than the variant glyphs (renderings) for such characters.

The fact that you think you know better says it all for me so I'm done. If you're after another 37 levels, you're on your own.