Turns out this data is accurate (we just had ~23% of the network fall off due to a bug with Prysm). If Lighthouse had had the bug instead, then the network would've lost finalization (not good)! So if you're a node operator (especially a big one) running Lighthouse, it's time to switch to a minority client. Do your part for Ethereum client diversity 🫡

Also worth noting that you can use software like Vero which, as their Github states, "cross-checks the blockchain state across multiple client implementations before submitting attestations." Good redundancy to have in times like this!