( Speaking 100% for myself. )
I think it was tremendously irresponsible, especially in the context of current events, to take a complex technical issue like this and frame it to the general public as a 'safety' issue.
It's created articles like this :
https://www.wired.com/story/cloudflare-bgp-routing-safe-yet/ , which are terrible because they imply that RPKI is just some simple thing that anyone not doing is just lazy or stupid. Very few people will read to the bottom note about vendors implementing RPKI support, or do any other research on the issue and challenges that some companies face to do it. It's not their job; that's ours.
I feel like there has been more momentum in getting more people to implement PKI in the last 18-24 months. ( Maybe others with different visibility have different opinions there. ) There are legitimate technical and business reasons why this isn't just a switch that can be turned on, and everyone in our industry knows that.
In my opinion, Mr. Prince is doing a great disservice by taking this approach, and in the longer term RPKI adoption will likely be slower than it would have been otherwise. I genuinely appreciate much of what Cloudflare does for the sake of 'internet good' , but I believe they wildly missed the mark here.