except for the fact that it is slower than hell and the syntax is nuts. I don't really understand the comparison, bash is basically just command glue for composing pipelines and pwsh is definitely more of a full-fledged language... but to me, I use bash because its quick and dirty and it fits well with the Unix system.

If I wanted the features that pwsh brings I would much rather just pick a language like Golang or Python where the experience is better and those things will work on any system imaginable. Whereas pwsh is really good on windows for specifically administrative tasks.