While I love Star Trek Online as much as anyone (I actually have a lifetime subscription), I would caution from using that lore to make Discovery theories as I find it very likely the new Picard show is going to completely bulldoze STO.
As for STO, they'll probably literally have Q in-game snap his fingers to explain how the game drastically changes to fit the Picard show in a future update.
Yeah, I'm not saying STO is canon. I'm just saying Star Trek has many times mined ideas from non-canon sources such as novels and the animated series. No reason they couldn't get an idea or two from STO, but then do something completely different with the outcome.