I believe we can use Responsive images | Kirby CMS for all image types without having to exclude SVG images from the responsive image code.
Texnixe wrote in 2023 that Kirby does not resize SVG files
So when the browser gets to the <source> code and can’t find the resized SVG images, it will ignore it and move on to the <img> code, which will contain the SVG.
I think ChatGPT’s linting is wrong – there is nothing incorrect about with my original code.