It's the same drive that we see from JS to TS these days, or adding type hints to Python, and even to some extent why people pick up Rust: because you get a refusal to act and an explanation rather than wonky results when you goof.
IME there's been a wider shift away from worse-is-better, and Perl was kind of one of the early casualties of that. Part of that is also how science has marched on: When Python and Perl were new, the most popular typed languages were kind of tedious but not what people would consider _good_ at types these days. Perl was the first language I learned, and if I was transported back to the 1990s, I'd probably still pick it, even if I don't use it in 2025.
(OK, maybe I'd go all in on OCaml. Any way the camel wins.)