If it comes up on exit-intent and doesn't steal focus, they don't seem that bad. An issue is that the triggering is worse on mobile and can be flaky if you're a

If it comes up on exit-intent and doesn't steal focus, they don't seem that bad. An issue is that the triggering is worse on mobile and can be flaky if you're an advanced user (aka like you are on HN and you Ctrl+Click a bunch of links to open in new tabs and then read them in a batch) - those sort of behaviors can trip the exit intent prematurely.