Dear perl-diddler you have all my solidarity. Welcome in the world. Capital want to multiplicate himsefl: no matter what is good or beauty. They looks at trendy shiny (profitable) things.
I think quite in the same way as you, but i think you would not reveal your emotions: sting them where they are more sensible, instead.
I'm speaking about paragraph 1-3 and maybe 4 too in your presented answer. You are right there but think on the effect you provoke in the intended reader: "The medieval Perl writer has answered. Everyday the same crusade to defend good 'ol things.". Probably (as we know the person for the deep wise mail sent to you..) he stops reading very soon.
Consider instead a subtle provocation in their delicate parts (cutting paragraph 1-4):

Dear Alexander,

Effectively Perl is no more as wide used as was some years ago. Thanks
+ for point this to my attention. Even if Perl is used by almost all L
+inux and BSD distros, even if it is one of more used language to admi
+nister crucial services over the Net, even if it is updated frequentl
+y and new major realeases of the language had spread reguraly in last
+s years, even if the Comprehensive Perl Archive Network (CPAN) curren
+tly has 130,991 Perl modules in 29,153 distributions, written by 11,3
+03 authors, Perl now suffers the competition of some new launguages t
+hat, wisely, Vim choosed to support.

Many IT professionals, as me, had bring Vim to popularity as 'the prog
+rammer editor' but we used Vim because of it's flexibility and wide p
+urpose usability. Abandon Perl support force us to consider other opt
+ions to continue administering a mess of petabytes of Perl code that 
+is running in this moment all over the world.

Follow the trend of thinks, the evolution of the programming field, is
+ obviously a plus of Vim and for Vim's users, but break the compatibi
+lty with a such historical, but still very alive and active language 
+as Perl may be not so wise.

Viewing thinks by the point of a programmer please try "search.cpan.or
+g" and search on "vim" I see about 270 scripts...

[...]
[download]

Please consider all said as a personal tough, and rewrite it in good english as you can see is not my native language (it's Perl obviously..).
Go on Linda and tell us the rest of the story.

HtH
L*