So, let’s use the washing machine scenario. Let’s say that the washer was sold to you brand-new and sixty days after the arrival...issues start up, and the company determines that the washer is manufactured wrongly. The company offers a replacement washer. You accept.
Six months later, you have new problems and discover that the replacement washer is screwed up. The company offers another replacement washer. You accept. Six months later, you have new problems.
The true issue here is that the manufacturing side and the engineered design has deep flaws. They’d have to throw out the entire design and fire/replace most of their manufacturing folks...to fix the problem. The odds of this happening? With ‘no-washer-left-behind’ in place....zero chance. So you get a company that continues to manufacture marginal washers and a customer base which figure out the scheme but the price on the marginal washer is so attractive...that people accept the situation as reasonable.
But here's the thing - that's not happening. Companies that continue to produce substandard products go out of business. Maybe a bad model here or there - but recalls happen... AND no Amercan company puts out the same washer for 30 years that has problems. It doesn't happen.
Your 'washer' example might be true in a Communist country where companies are 'protected' by law. In a free market economy a company that puts out crap will go bankrupt... so your example doesn't hold.
Teachers who can't teach should be fired.
A man with a PhD from MIT will teach high school if it pays enough... and maybe that's the quality we need. If 'teachers' lose their union protection then we can start getting people in the schools smart enough to do the job.
If a company can't produce a washing machine they go out of business... if a school system can teach they should be replaced.