PowerShell is sort of two languages, and it looks weird because they are often used together. But if you see them separate first, there isn't much there that is surprising. I do somewhat share your concern about it being built on dotnet, but one advantage is you have access to everything in dotnet, including building GUI apps (Windows only). Though, at that point the syntax does get kinda weird.
Oh, the dotnet integration is what I actually like about Powershell. It's very useful even on Linux.