Yes, the WD Red line used to be for NAS use, but suddenly they started including SMR drives in their WD Red lineup, people got pissed because SMR isn’t a good fit for RAID setups which NASes usually are.

WD continued the practice, but introduced the WD Red Pro line. So now regular WD Reds could be either CMR or SMR, but WD Red Pro are guaranteed to be CMR.

In my opinion it’s still misleading to even brand the regular WD Red line as suitable for NAS use, but at least now you can specifically pick a drive that fits your needs.