It's not Pocket that's the problem, it's the gross attempted force-feeding (that just makes me want to try some other browser like Brave (not an endorsement, just what I personally would investigate next)).
How about, instead of "we plastered all this shit from the crap we bought onto every single browser window you henceforth open, you mindless peon!": how about they did some promo graphic and well-done animated enticement, along the lines of, "Hey! Pocket has tons of subscribers who upvote the most meaningful and relevant stories to them — how about we replace your blank homepage with the best of the best?"
But instead they're just like EAT THIS SHIT PLEEB and you know what fuck it I did just switch my default browser while typing this. :middle-finger-emoji-that-HNs-1970s-site-generator-isnt-compatible-with: