1) Perl can have a sub,scalar, list etc all with the same name. It's not a conflict.

While true, this is completely unrelated because it really just relates to methods, and you can only have one method of the same name in the same package.

2 & 3) It's probably doing some autoloading. Basically, this allows it to make up new names for functions. Not-so-basically, see http://perldoc.perl.org/perlsub.html#Autoloading.

Moose does not and never ever will do any form of AUTOLOADING.