A majority of the comparison videos , especially on youtube are invalid . Primarily because 99 % of time these people have no idea what they are talking about , including those big name with millions of subscribers . (With the exception of the more technical channels such as CalibrateHD , AVS , Digital Foundry and Vincent T etc )
Why ? Because these people are no calibrator . They have no idea what an accurate, a near perfect picture should look like . Especially when these videos are not even encoded in HDR , how do you showcase the extended dynamic range of HDR on a regular SDR youtube video ?
Not to mention the long term exposure of overly blue-ish white from these ridiculously inaccurate and overly saturated smart phone and monitors , a lot of people don't recognize what does a simple color such as white looks anymore.
"HDR ? MEH , OVERRATED " is also a very common opinion. There is a reason behind that .
Take a look at this unfortunate color chart .

When the TV is unable to showcase a specific color shade , it will simply pick one from the nearby palette and melt it together on the picture, causing images to look too soft and washed out , color and texture details are lost in the process . In such cases you are better off sticking with SDR .
TV makers are also partially to be blamed for this . A lot of these so called HDR TVs are just TV with upgraded pixel numbers . Their limited color gamut and cheap brightness ratings , terribad color volume have severely impeded the intended HDR effects . Yet most of these TV owners , who usually don't know much about PQ will arrive at the same conclusion as you - HDR is nothing more than a myth.
For eg : Horizon zero dawn on an appropriate HDR display almost look like a different game . During the night , the contrast between the moon , the stars and the clouds is a sight to behold.
Compare with SDR , the sky is more than just a uniformly blackout . Shifting between very dark shades of colors expose more shadow details, the moon shines like an elusive pearl in a dark room , you can see more texture and details around edges of the moon and clouds . The torch effects look almost 3d , as if someone has lighten up a match stick in front of your TV . It is incredible how HDR can transform a night scene which is usually monotone and muted , into such vivid scene with deep , dark shades of gray and shadow matchup.
Perhaps the situation will improve in the near future , but as of now true HDR compatible displays are still quite pricey and remains out of reach for many .
I am not posting this to insult these cheaper TVs , people have rights to reserve how much of a budget they want to spend on their AV equipment . But I have had many friends who were in your boat and they have completely changed their opinions about HDR after I've shown them how HDR looks like on the calibrated AF9 I have gotten from Sony China a while ago .
Fun fact : do you know 95% of the TV on market is unable to show the color - red from a simple Cola Can ? Yes all the "red " Cola cans you saw on TV are actually different than what you perceived in real life .
The last part is probably true, only the really expensive TV can show HDR correctly, hence again, until this technology got better and cheaper and trickle down to the mainstream mass market, HDR will leave a not so good impression among consumers with wildly varying degree of results.
Hmm..maybe i will replay HZD(completed long time ago) to go to night scene to look around.