“Works in pretty much any modern browser except IE (because IE doesn't have support for the <canvas> tag).” Please explain to me where “tone“ is hiding in that

“Works in pretty much any modern browser except IE (because IE doesn't have support for the <canvas> tag).” Please explain to me where “tone“ is hiding in that sentence. I don’t see it. There is nothing at all judgmental about it. It’s matter of fact, I don’t even see so much as a word or phrase that could in any way be construed as a snide remark directed at IE. I can’t find any possible interpretation that would hint at any kind of axe the author might have to grind. Context doesn’t help, either. The actual tone might help but the author sadly doesn’t provide an audiobook version of the webpage. (Snap judgments. This is why we can’t have nice things.)