well, its a convention , it makes it easier to guess the command name, and considering in pwsh you have hundreds of commands, finding the command can be a challenge

pwsh have autocomplete and command to help you find other commands

pwsh is actually more unixy than unix, it have more specialized commands in linux you have bigger command, commands that do at lot, and take a lot to learn

pwsh is a great idea, implemented very nicely, i dont see any major flaws , except poor adoption on linux .. and of course dotnet dependency

a native pwsh would be amazing