Seems there are a few different interpretations of “winter hardtail” here.
I think that depends on the reasons for a ‘winter hardtail’.
I’ve always found the dogma of ‘protecting my good bike’, be it an FS or not, somewhat disingenuous. After all, unless it’s a complete ratbike, the value of a hardtail that’s actually worth riding off-road will far outstrip the maintenance and replacement costs of keeping the nice bike running.
On my trails, the advantages of an FS are much diminished in the soft schlop in the wet months, and I find riding a hardtail keeps me sharper for the FS too.
YMMV.