Film is a fun, interesting, authentic, and useful medium for filmmakers, and there are established workflows for it. A camcorder writing interlaced video to miniDV may have its charms (I still have a great old Panasonic 3CCD one) but as a filmmaking tool it would be really inconvenient. Shooting in an ordinary digital workflow and adding the effect later is a no brainer production-wise.

That said, I would not be surprised to see camcorders, DV or VHS or whatever, rise up as a Polaroid-like alternative to smartphone cameras! Old digital point and shoots are already popular that way.

The difference is that films had better performances than digital equivalents in some areas for a long time. It isn't/wasn't just nostalgia.

The imaging device used in electronic camcorders before the transition to CCD had visibly gray whites. They weren't so great by any standards. Hence very few chases it, with nostalgia being the sole reason to do it.