BlolPloop @darkness tbh I'm at a loss as to why it's not working for you. The output from the last commands I had @darkness do look correct, there's no reason sudo modprobe wl shouldn't be working that I can see. Your systems are clearly working just fine with zstd-compressed modules in general since we now compress ALL kernel modules with zstd. My only guess is that something somewhere is hard-coded to use wl.ko and only wl.ko but given that we're talking about like 70kb of space savings here I'm just going switch the Broadcom kernel modules back to uncompressed (should be in the next sync).
If anyone else wants to further dig into this particular issue feel free, it's probably something hard-coded in a udev rule, modprobe entry, hw database something like that.
