In general, people HATE this.
But things will get better.
The first AI thumbnails were generated with Dall-E 2 in 2022. This was the first decent image generation tool. At the time, no one noticed the AI thumbnails because most people had never seen them.
But Dall-E 2 was honestly very bad. It took like 50 tries to get anything decent.
Dall-E 3 was released in 2023 and was a lot better. You could generally get a useable image after just a few tries. But it had a certain "stink" to it. All the images were super cluttered. We used it for a few quizzes but it got old fast. Here's an example of a Dall-E 3 image.
Dall-E was later merged into GPT 4-o and this version was better yet. For the first time, it could handle text (kind of). But the "stink" remained. Everything has a gross, yellow tint to it. Here's an example.
We also briefly tried using Grok to make images, but gave up quickly. Example.
But things are getting better. Recently, we have been using NanoBanana by Google. I usually start with a normal image and then edit it using the AI. This works much better. And though the AI is still completely stupid if you ask it to do anything complicated, it works. The images don't smell and the thumbnails come out looking great.
But seriously, some of these thumbnails aren't that bad even now, it's just that some people are ideologically opposed to the use of ai for image generating (I partially agree with them tho).
"It's not the image itself, since it doesn't even contain any errors, it's how the image is made. Stealing the works of many thousands of photographers and possibly painters without any permission is not right."
"Most images on Wikimedia Commons are free to use, there is a vast collection of images there."
Especially when there are plenty of free to use images made or photographed by actual real people.
does qm call chatgpt "he"? i wonder...
In France, when a company uses AI-generated images, it must be disclosed (for example, in an advertisement for a beauty product).
Also, why create controversy by keeping them around? Clearly nobody is advocating for AI thumbnails to stay. If you do keep them, at least add a caveat like Stewart mentioned, but I wouldn't understand why when its more trouble than it's worth.