"Are you suffering from the Liquid Glass optical illusion? Let us know in the comments."
No I'm not experiencing it or "suffering" from it.
Edit: the linked Gizmodo article has at least one inaccuracy: "To create the effect of glass and all of its reflective and shimmering properties, iOS 26 forces every icon on your iPhone home screen to have a slight glow to them in the top left and lower right corners."
That slight glow is around the icons and shifts as you tilt your phone -- it's not just the top left and lower right corners. If I tilt my phone, the glow will travel around the icons (easier to see on folders), shifting from the top/bottom/corners/sides to another location. It's a subtle effect that I think is a cool little detail.
2nd edit: I'm not saying other people are not experiencing the effect, just that I'm not. Also, while it can be thought of as an optical illusion, it's not quite a typical one.
Typical optical illusions affect most to all people. That this is only affecting a subset of people suggests it's more of an effect that is eliciting an abnormal sensory experience for certain individuals.
What's complicating the potential issue is the effect of suggestion through social pressure. What this means is that some people don't really notice the effect but when it's brought to their attention they start to and might even state, "Now I can't unsee it!" That's because what we perceive is affected by what we pay attention to and how we interpret what we perceive.
In effect, some people aren't really noticing the effect until they convince themselves or are convinced by others that it's there. That's not lying (although it's possible some people are lying about it), it's just the nature of how our brains work.
What's likely is a small subset of people experience the effect. Some others do not until someone points it out. Most in both groups should go back to not experiencing it again after some time. Our brains are excellent at adapting and normalizing (adjusting to) new experiences.
If you are experiencing this effect, give it time and it should go away. Just be glad that part of your brain is working well enough to notice something new.
3rd edit: Can we stop using things like this as a metric of anything meaningful? "The issue has gained attention on Reddit, with one post receiving over 3,000 upvotes". There's the issue of selection bias, bots, and more. It's data but unscientific and potentially useless and even misleading data.