I don't see the content you intended showing up to click on, but I'm guessing someone spoke of backlight bleed (I also saw someone mention IPS Glow as a separate thing), which can be a thing with IPS panels. RTings.com seems to be a reputable site for reviews;
here's their review of the Dell U2723QE. Scroll way on down into the Test Results sections, and under Picture Quality, scroll on down to Black Uniformity. It scores 5.9 and says:
"The Dell Ultrasharp U2723QE has disappointing black uniformity. When you're watching dark scenes in a dark room, the backlight bleed along the bottom edge is noticeable. Unfortunately, the uniformity is worse with local dimming because there's blooming around bright objects. The local dimming measurements are taken in HDR because the local dimming feature only turns on in HDR."
It was listed in their
Best 5 Dell Monitors of 2025 Reviews.
I imagine some YouTube reviews of it ought to try to show you what it looks like. I'm not sure how much it varies unit-to-unit, and this display has been popular for years so maybe quality control has improved? With the time factor in mind, here's a thread:
Started in February 2022, 56 pages on this and the 32" similar display, and a quick skim suggests it wasn't till around Post #75 that someone got their hands on one (the 32") that morning. Post #171, someone finally got a 27" and it was missing a cable and may've been on 'open box' product. In Post #213 a user with 2 32" discussed backlight bleed and IPS glow a bit, and has photos. In Post #234, Degrader wrote:
Some user experiences from my side. I've tested four samples of the U2723QE. The first two had production date Nov 2021 and the other two Jan 2022. All orderd from Dell's website. The first two were quite disappointing regarding the contrast and backlight bleed and clouding (so bad black uniformity). I've measured (with a SpyderX) 1300:1 in the centre of the screen of one sample and the other 1700:1. The samples of january offered 2000:1, even a little more. All the four samples had the same firmware version (M2T101). When measuring the gamme value I saw in the standard mode that two samples had a low value of 2.0 and the other two the expected 2.2. A low gamma value has a big impact on the perceived contrast and saturation of the colours. However when using the sRGB, REC709 or DCI-P3 mode than the gamma values were conform the expectations, so 2.2 for sRGB and Rec709 and 2.6 for DCI-P3.
Amazon's product page has a lot of reviews. My take:
1.) IPS Panels have pro.s and con.s, and it's an IPS Black (better contrast) based panel.
2.) Dell is a reputable brand name, widely known.
3.) Dell often has monitors in a 'sweet spot' mid. range in terms of value - features and quality for money.
4.) They get a lot of attention - 2 similar Dells led to a 56 page thread in a Mac forum with a bunch of posts before anyone even had one.
5.) With that many different perspectives scrutinizing the details, and product variability, I figure there's plenty of criticism to feed FUD (Fear, Uncertainty, Doubt). You might find more criticisms on the Dell than a competitor with the same issues if the latter gets less attention and scrutiny in reviews.