"Color Profile Doesn't Match" but it does?

First of all, you should be aware that an image with your display profile embedded is effectively not color managed at all. The only proper occasion for using the display profile is in screenshots, which should then promptly be converted into a standard color space like sRGB or Adobe RGB.

The message itself is can safely be ignored.

All it says is that you're converting into a different profile than your working space - the proper response to which is "so what". The working space isn't important. The embedded document profile will and should always override it.

All these mismatch warnings can be disabled in Color Settings. I haven't seen one in 15 years.

you're not reading that mismatch correctly... it says that your Source is sRGB and your working space is sRGB, but the destination is Display. You need to change your destination doc to sRGB, using edit>convert to profile, sRGB.