Here's the answer:
Here's how I found it. I opened "/usr/lib/systemd/system/tor.service" and I saw that the commands that systemd uses are:
So you absolutely can use arguments with systemctl. You just have to put them into the .service config file.
According to this FAQ from the EFF, Freedom Host had a publicly visible IP address that allowed the FBI to physically seize their server:
In December 2014, the FBI received a tip from a foreign law
enforcement agency that a Tor Hidden Service site called “Playpen” was
hosting child pornography and that its actual IP address was publicly
visible and ...
This new feature is called, "Letterboxing"
Tor Browser, in its default mode, is starting with a content window
rounded to a multiple of 200px x 100px to prevent fingerprinting the
screen dimensions. The strategy here is to put all users in a couple
of buckets to make it harder to single them out. That worked until
users started to resize their ...
Onion services require seven hops because it is important that nobody, not even the rendezvous point, is able to deanonymise either the client or service, even in the presence of adversaries controlling any one point. The three-hops-from-client-to-service design you hypothesise cannot, by currently-known methods, be made secure for both client and service ...