You can set your color management policy in Edit>Color Settings.
At least you can untick boxes for missing and mismatching profiles here.
I personally have set "Preserve Embedded Profiles" for RGB and
"Preserve Numbers (Ignore Linked Profiles) for CMYK.
You can easily google about this.
The dialog in your screen capture is for the opening document's RGB profile (not CMYK). If you generally want Adobe RGB to be your working and assigned RGB space then go ahead and click Adjust the document to match current color settings and save the document, then you won't get the warning next time you open the doc because AdobeRGB will be assigned. If your doc colors are all CMYK the RGB profile isn't used.