We have our share of forum spamming attempts, so personally I'm a bit more careful. If that results in sarcasm, I'm surprise. But then again, not everyone always shares my type of humor.
On the topic of "Operation not permitted", entire books can be written by now because of Microsoft's changing attitude towards Samba. The old v1 turned out to be a security hell hole (see 'WannaCry'), and v2 and up requires user credentials and don't support network browsing any longer. As long as Kodi and thus LibreELEC are still in Beta territority, I'd say it's best to wait updating Wikis on that topic. Stuff may still change.
if you don't enable SSH in the initial wizard, it can't be done
Mmm....That's not what the wiki says.
Note: SSH has to be enabled at the very first start of LE (installation wizard). Otherwise the SSH service isn't available.
There is a difference: the SSH server isn't enabled by default, so if users are in need of SSH right away, they can enable it via the 'Installation wizard'. SSH can also be enabled/disabled in LibreELEC's Settings Add-on as you already found out.
I'm not saying the LE wiki is perfect. Wikis tend to be more like a never-ending story.