Do you think there's no such thing as a number of bugs that would cause customers to leave more rapidly?

I don't see a big difference between what you're saying and the person you're responding to: until the level of bugs reaches the point where it hits revenue, it doesn't make sense to invest in fixing them. There's a tolerance for some level of imperfection - in fact, expecting perfection is itself somewhat irrational here since it's not like other industries routinely deeliver perfection.

I'm also not convinced we're seeing an overall decline in software quality. There was a LOT of shit software from the 80s and 90s I don't want to go back to.

EDIT: It's a bit of a Yogi Berra - "modern software is terrible, people just shovel out crap since the customers don't want to wait!"