For reference, I installed this modpack through MultiMC, and am using Java 1.8.0_312. I've allocated plenty of RAM (8 GB max). I am using Artix Linux, and every other Minecraft instance I have installed runs without issue.

To describe what the crash is like, the game boots, immediately draws a white screen with a red box in the bottom-left corner that logs that it "failed to load 28 modules" and then scans a bunch of jar files, all while printing how much heap memory is used at the top. The logs clear too quickly for me to provide more detail.

Logs
(reproduced identically on each startup)

Nevermind, I just solved it. Much like many similar issues, it's caused by the same version incompatability with update 332 of Java 8. I had updated my system while MultiMC was open, so I didn't notice the update until just now. I rolled back my java8 version (for fellow Arch users, running pacman -U on an old package version stored in /var/cache/pacman/pkg will let you rollback updates)