What is HomePod's Life Expectancy?

All of my homepods make popping sounds.

Some of them are stilll under warranty and have been replaced. The replacements still pop.

A Senior Advisor told me this is because all products have a finite lifespan.

What is the life expectancy of a homepod? How can you even answer this knowing the same issue that fries my out-of-warranty homepods is also frying my in-warranty ones?

And why should I have to pay for the repairs when you just send me a replacement that will also die the same way?

I can't keep buying Apple products if this is how they're expected to last and how we are expected to replace them. All 5 of my Apple HiFi speakers still work as good as day one on my Airport Express v2s, they're easily outlasting my homepods.