I just tried putting it on with the idea of trying it out for one workday to see if it breaks something. It immediataly broke favicons on my GitLab tabs (turning them into random vertical stripes of pixels), which is both odd and a pretty bad start.
I really like the idea behind this feature, but it seems the Web API might have become too complex to counteract bad actors like this. It's particularly scary that it can correlate your activity in private mode with your identity in normal mode.
RFP randomizes Canvas data extraction by default, which might have something to do with it. Gitlab favicon seems normal to me when I navigate there(RFP on).
I really like the idea behind this feature, but it seems the Web API might have become too complex to counteract bad actors like this. It's particularly scary that it can correlate your activity in private mode with your identity in normal mode.