For those users who don't want to see the 404 Wayback machine notification, provide a way to disable the notification without having to go to brave://settings/braveHelpTips.
Setting "Don't ask me again" should toggle 'Show Wayback Machine prompt on 404 pages' setting.
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Please yes... this Wayback Machine integration is super annoying.
Even worse, it seems to show up when a single resource used by the page 404s
Go to https://mdcoverage.secure.force.com/docs/metadata-coverage
notice the page loads completely and correctly but you STILL GET THE BANNER.
@yippie Via devtools console, it looks like something did 404 https://mdcoverage.secure.force.com/docs/metadata-coverage/48
We'll look into not showing the prompt if the main resource is loading properly.
@yippie that page is trying to redirect to https://mdcoverage.secure.force.com/docs/metadata-coverage/48 which network shows a 404 received. Brave has no way to tell if the content actually loaded, only what HTTP status code was returned. This feature can be turned off on brave://settings/braveHelpTips

Just turn it off there and you'll never see it again 馃槃
Oh thank you! turned it off because the Wayback has proven completely worthless for me. I have never encountered a situation where it would actually work. I have only ever gotten it in two ways:
@yippie you're welcome 馃槃
cc: @rebron for feedback!
Another example of users having a hard time finding the setting that disables this feature.
Most helpful comment
@yippie that page is trying to redirect to https://mdcoverage.secure.force.com/docs/metadata-coverage/48 which network shows a 404 received. Brave has no way to tell if the content actually loaded, only what HTTP status code was returned. This feature can be turned off on brave://settings/braveHelpTips
Just turn it off there and you'll never see it again 馃槃