How can I push back against PMs and suits when they want stuff like this?
I think whatever I think to say or have said is just talking past them; they don't seem to care about the ability of the product, just that it appears good enough to sell.
The one and only way to convince management to be interested in quality is to convince them it will cost the company lots of money to ignore it, and to convince them the company will be able to easily attribute that cost increase to them specifically.
Appealing to common sense, or morality/ethics, or a sense of professional responsibility or pride in the work, won’t help. Saying that crap work will tank the company won’t even help, because if attribution is missing, there’s no fear of punishment and a good chance of failing upwards. IOW, just assume that most adults will act like horrible selfish children most of the time and you’ll rarely be disappointed.