The AirPod Pro Max also get too loud, they are ok at low to mid volumes, high volumes = extreme tinnitus.
HomePods are similar, I can only have them on at volume levels I appreciate for short periods of time or I get tinnitus.
Compare this with my old sennheisers and audeze headphones, 0 tinnitus even at extreme volumes. Similar for my in ear Mochi headphones.
Or compare the HomePods to my Panasonic Surround Sound Speakers for my TV from 12 years ago that I still use, I can make the walls shake with no tinnitus. If I turn up my homepods to a volume close to that my ears will be ringing for hours or days after. It really bums me out, I wish I understood what is changing about the technology. Like are they going from Analog to Digital and is digital more harsh or something? I don't know.