The Max Frame Average Light Level for Double Indemnity was only 86 nits, within the range of SDR. As far as I can tell, the only portion of that disc that utilized HDR was the modern Universal logo...
I'm picking this up today in the Criterion Flash Sale, as the only copy in my library is a 20 year old public domain DVD, and I have a $10 coupon that obviates the price difference between the Blu-ray and UHD.
I'm firmly in the camp that nothing shot and originally finished on film "needs" or...