Well, first I think it was odd that they did the upgrade right after the reviews came out, and changed the very thing that the reviewers had praised about the HomePod vs the competition; i.e., stronger bass. And if I remember, Apple said it was because users preferred less bass. I guess reviewers all like heavy bass but no one else does. Weird.
Second, I think it’s clear now that the HomePod’s main hardware weakness is that the amp has a difficult time driving all the speakers - it gets too hot and eventually fails. Now, I suspect that Apple knew they were on the edge with cooling. Sounds like Apple. Maybe they thought that between the announcement and release that they could solve it - they have a history of doing just that. And maybe even that was what forced them to make the bonkers decision to delay the release until after Christmas.
So my theory is that they ultimately couldn’t rework the hardware in reasonable time, but thought instead that they could get the speakers to last by reducing the bass load. The problem being that it didn’t sound as good and they needed the initial reviews to be glowing. So, they released it with the EQ that sounded best but they knew wouldn’t last, got their reviews, and then promptly reset the EQ to something that would at least last through the warranty period. Then, with good sales, they figured they could release an upgrade in a year or two with a real hardware fix. But the sales didn’t happen, they swallowed two price drops, lost money, and scrapped the update since it would have been equally expensive to produce.
Instead, they went forward with the mini to fill the gap while they redesigned the HomePod to match the $300 price point they think will sell.
Pure conspiracy theory, but it’s mine and I like it. 🤣