Everyone is underpaid and overworked. All things considered the companies probably think it’s worth the trade off, they’ll just fix it and republish. Might even end up with more viewers in the end! How many people have learned that Mad Men is on HBO Max as a result of this?
Execs have less and less shame as the years go on. Pride in artistic endeavour? That’s not going to make the shareholders happy.
Also cuts down on QA costs, offloading the burden of finding and cataloguing issues to the user. Since this is a monopoly, as you can't have multiple vendors competing for the best 4k restoration, and you can't have multiple streaming services competing for quality, they don't consider brand impact with low quality products because that's meaningless in this case.