You don't need to do it often, but initial training requires huge ressources and someone has to do it, if you want to create new models from scratch. And for this you need your compute packed as close as possible.
You are probably thinking of "Liesel" a diminutive of the name "Elisabeth". Pronounciation is LEE-zəl, so maybe this is indeed some weird attempt to use a german name.
Mods used third party tools to help them with their unpaid work. These tools relied on access to the reddit api.
Then reddit charged ridiculous prices for api access, which would mean the apps would need money, so mods would need to pay to do their unpaid work or use the inferior reddit interface.
Given these choices, some mods decided to leave instead.
You don't need to do it often, but initial training requires huge ressources and someone has to do it, if you want to create new models from scratch. And for this you need your compute packed as close as possible.