I'm sorry to write to you here,

[korenevskiy]

I'm sorry to write to you here, I really wanted to say a little message.
I read "On Container Queries, Responsive Images, and JPEG-XL".
It became obvious to me that adaptive images (JPEG-XL) cannot physically exist in the layout, even there is no point in doing a discussion here. Because adaptive images cannot exist without the support of the SIZE attribute of the tag. Please note that I did not make a mistake in the attribute name, In the case of adaptive image support (JPEG-XL), it requires specifying the minimum jump size in the new attribute of the tag. I.e. there is no point in holding a discussion here, since the IMG responsive tag and the file size are responsive, they cannot depend on each other, Since the file size is responsive, then you need to create a support in the markup tag, i.e. specifying the minimum size of the jump file.