Dead HomePod

I’m here to learn how common it is to have a HomePod just die and the Genius Bar have no solution or explanation. Two of the four HomePods I bought have died this way. The first was within a year so was replaced by a perplexed staffer at the White City Apple Store. The other that failed in the exact same way was after three years of use and this time I’m offered a replacement at full price by Covent Garden, again in London. There is no physical damage to either HomePod. The deaths of the units followed this journey: First the sound cuts out. You power down to reset aster trying restart from Home app. You check the automatic software updates are switched on in the Home app. Over the next two to three days this happens again and the + - lights flash off and on. Eventually the only option left is a full reset (holding down red light as per instructions). This works for another few hours then fails. Now the HomePod is dead and no one, not even someone at the Genius Bar, is able to get it reset and responsive. Two out of four becomeing useless in this way is a poor average for a product I would suggest. Especially one from the this famously reliable company. The personnel I spoke to at the Apple Stores said they had not seen this before. So I must be extremely unlucky I suppose. Like others on this forum I feel poorly served by Apple on this issue. It’s an expensive item and the company have nothing to say but buy a new one. With every other product I’ve taken to them I have received friendly, expansive conversation and generous help and advice. With my dead HomePods, the Apple employees were uncharacteristically taciturn as if they were avoiding conversation because there is a dirty secret about this issue they don’t want out there. That’s the impression I got. Could this be the real reason they were discontinued and now are miraculously are being relaunched? I doubt it but if my experience is more common than I’ve been told then perhaps there is something in this paranoid-sounding theory. I’d like to find out if I’m alone here or not.