I'm not sure how recent that thread you're referencing is. I found a thread where someone converted their mid-level illumination to the high-level option. They did the changes through VDASH and they confirmed their vehicle attributes in VIDA to be concurrent with the configurations they completed, which IMO shouldn't block a software update. But maybe something more recently happened at Volvo like they did with the CEM Pin thing.
Thread here:
https://www.swedespeed.com/threads/a....647565/page-2
If anything, I could just revert the configurations before bringing my vehicle in for service. It's past its warranty period so I'm not concerned about voiding warranties. My only concern at this point is bricking the vehicle.