I think we are misunderstanding each other, Vortex is not generally excluded just because there is no special support for it from us
(SureAI itself does not support mod's or mod-managers directly anyway, that would have to be done by the actual program- or mod-creators, not us).
I don't use Vortex, for example, so I don't know anything about it.
Of course you can also use simple mod´s via Vortex and Co or even install them manually / without a manager.
Maybe automated mod lists are something else? But someone in the mentioned Discord's will probably be able to help.
Why xEdit should not work is not quite clear to me, I have created mod's myself and also worked with SSEEdit in EnderalSE,
but I have installed my own mod´s manually and then edited them,
or used MO2 for many third-party mods without xedit. Maybe mod-manager and XEdit are a problem?
But MO2 is not hard to use, you just shouldn't try to use Windows 7 or 8 with it, but at least Windows10.
As I said, if you want to use Eddoursul's version and not Steam / SureAI's, just contact him directly or his Discord if you have any questions or suggestions.