css.at-rules.media.grid - lots of cross browser issues but you wouldn't know it

What information was incorrect, unhelpful, or incomplete?

Currently showing that the grid shows that all browsers support the grid media feature.

However, this is misleading (https://github.com/w3c/csswg-drafts/issues/7121#issuecomment-1064376176).

What did you expect to see?

1. An extra row showing if the browsers support the boolean form: @media (grid). We found that Chrome does not support it, but Firefox does.

Note: afaik it's impossible to test this boolean logic in isolation in Chrome, as Chrome doesn't match @media not (grid: 1) even though it does match @media (grid: 0) (due to a bug with not?), and even if @media (grid) was working, you'd need to test with @media not (grid) to validate it works, as (grid) should never match in Chrome

2. A note on the page referencing the Chrome issues

Did you test this? If so, how?

Using this CSS (+ permutations) as a check

<style>
@media not print and (grid: 0) {
  body {
    background: red !important;
  }
}
</style>

Start with the MDN page for @media/grid and its browser compatibility data entry, then compare the current values with the CSS test case in the issue. Check the linked CSSWG discussion and Chrome issue context before deciding how the boolean form and explanatory note should be represented. Done means the page accurately distinguishes the supported forms and documents the known browser limitations.