Re: HDR
Not so much, it just introduces a lot of range in the "near black" which most folks hate as we invented illumination to make living in dungeons and shadows a little more pleasant. The idea is that it models the authentic range in real life which is only really represented in a film based world in a cinema... but clearly an era of cinema where there weren't permanently illuminated emergency exit signs. Also to fully appreciate that dark range, you'd need to let you eyes fully adjust for 5-10 minutes which would be a very curious game or movie opener and the minute there's one explosion or flash of light, back you go again.
HDR really is the equivalent of high-end audiophile nonsense. Physically it is a real thing (like hearing above 20kHz) but practically of no use. Worse still when activated with "auto", it will corrupt all your existing gamma/black point settings and technically make everything worse.