An important reason against Pascal is the tiny community. It's so easy to cobble things together because there's a huge package base, or even just projects on Git forges. Also, to the extent people put their Pascal packages up, I have found them often dated, and written in outdated Pascal styles (a lot of manual Freeing for instance, another project's functions never return anything but ask for an output structure as last function parameter). Kinda hard to see what a nice and modern codebase looks like.