I can't wrap around my head why people are judging the display based on a video recording. There's no way to tell how good the display is from that video, the black will appear pitch black because the exposure is set to automatic (in other words, the video shows the display dimmer than it really is), when I take pictures or videos of my ISP monitor it looks the same way, with pitch blacks but it's neither miniLED or OLED.
If you match the exposure and make sure the black levels in the video appear as they are in real life, then you can go ahead and judge the blacks and how deep they are, or how serious the blooming effect it.