WD should not have sold CMR and SMR drives under the same consumer label without distinction, but that's a marketing issue. The panic was instigated by self-appointed YouTube tech influencers who drummed up fear without bothering to show their followers how to make use of the drives.
The reality is that anyone can install ZFS and throw drives in a pool regardless of their characteristics and without adjusting a single sysctl tunable, then complain that they're not storage admins and shouldn't have been expected to manage their own systems. The moment they realized they didn't know as much as they thought they did, everything turned into hysterics.
I'd say $4-7/drive was totally worth paying to put this to rest.