I still don't know why it doesn't come with an equalizer built into Home. Sometimes I want grumbly bass; sometimes I want to understand Bane without subtitles.
Not an equalizer but Reduce Bass setting does exactly this. I actually have it on at all times because it makes the HomePod sound more flat, the default has too much bass for my taste.
The description of the tweeters has changed on the spec page as well. I wonder if they're still using balanced mode radiators (BMRs) like the first gen HomePods? Perhaps these use a newer generation BMR?
I don't think they're BMRs, they're just conventional full range drivers, similar to what Apple has been using for almost two decades, going all the way back to the iMac.