After hours of research, I've determined that the API is what's stopping me from using anything ≥1.13.0 for 1.18.1 because it always crashes unless I remove it, while using OptiFabric and OptiFine.

I was about to blame Light Overlay for this until I committed another half-hour of troubleshooting, hence how I determined that Architectury API is the trouble causing my suite of mods to not be functional.

Otherwise, using Fabric 0.12.12 is the fix for now.

Duplication #195
Just a heads up for everyone else, if this keeps happening for another 2 weeks I will add breaks to optifabric in future versions of architectury until they have fixed it so people don't have to research hours into finding that this is wrong.

The strange thing is OptiFabric isn't breaking Architectury. It's something specific with OptiFine in Fabric 0.13.0 and greater with Architectury. Because I ran the game without OptiFIne jar but also with OptiFabric. Aside from the warn that comes up which literally makes the game unplayable because of no OptiFine for use with OptiFabric the game launches.

So I am unsure what the problem is, without a full comprehension of how OptiFabric modifies OptiFine. I have created an issue on Chocohead's repo, let's see what happens.

It's most likely this issue: Chocohead/OptiFabric#598

Thank you for the insight.

Still issues with OptiFabric 1.12.10 on Fabric 0.13.3 after API has been updated to work past 0.12.12 last I checked.

I'll confirm and respond later if the issue occurs without extraneous mods using a "Clean" instance.

Yes, there have been no Optifabric updates to fix the crashes so it still will not work.