Well, that and CPAN…
Also, CPAN is considered one of Perl's strengths. How did CPAN cause Perl to burn out?
My recollection of CPAN - and we are talking a really long time ago now - but it was just very much the same kind of dependency hell that we now have with NPM. In fact now that I mention it, I think there are strong comparisons to be made between Node and Perl. CPAN was great until it wasn't, and after a while - in my experience - it was mostly not great.
It's still missing those :)
(To be clear for people unfamiliar with Perl, it probably will never have them, because it doesn't need them. In Perl, all functions effectively have a single parameter of array type. The standard convention is to assign each array entry to a variable at the start of your function definition, and the names of those variables then effectively act as parameter names. But that's just a convention and you can do something else if you want.)
All new features must now go through an experimental phase after the smartmatch debacle. Signatures stayed in experimental status a little longer than most new features due to an unfortunate change with respect the order of function signatures and function prototypes. Provided you weren't using prototypes (which you almost never need) then they've been largely stable since 2015.
Most distro's under current support ship with at least Perl 5.24, so you can use them almost anywhere.
use feature 'signatures'
use v5.36@_
@_____
@________
<wow, this thing is long>
_____________
<success!>