A useful option I've seen in Edge. It allows you to filter out the data URLs which make it easier to read network requests. Could come in handy for Firefox too
For info, we just landed support for data uris in the netmonitor, which should be available in Firefox 135. Prior to this we were actually not showing data URIs at all in Firefox DevTools.
I will try to add the option to hide those entries in 135, but short of that you can also use the filter to exclude the data scheme.