I don't think that's what the parent was complaining about, it was more about handling signals correctly. It's incredibly easy to write buggy signal handlers on a Linux system. The "self-pipe" trick[1], and later, signalfd(2) have made signal handling much easier, but a lot of programs still do it the old way.
Type checking and calling help methods can be useful for debuggability! If you want to figure out what you're looking at in string format, call its .ToString method.
Adding extra complexity just means more to go wrong. Plain text can't really go wrong because anything can use it, anything can edit it, anything can show it. With "objects" I'm betting that Powershell itself never fails.