Jumping from loose-typed language to strict-typed language will be hard.
It’s also a matter of your general programming experience. Once you write, like, ten thousand lines of meaningful code in Python, learning C# should take you a month or two at most, you’ll know most programming concepts and algorithms intrinsically, and the rest is just learning syntax.
It’s because you now need to do
systemctl restart sshd
instead of/etc/init.d/sshd restart
, I see no other reason than having to learn new syntax.Arguably, init.d scripts were easier to understand, and systemd is a bit of a black box, it somehow works, but who knows where it writes logs or saves the process pid (it’s all in the documentation somewhere), with init.d script you can just open the script itself and look.