What annoys me is it's always the HomePod's that are the problem (I only use the mini ones), if I ask Siri to do something on the watch, phone or iPad Siri usually does it pretty quickly and reliably. But on the HomePod Minis and I have 5 of them they all eventually seem to glitch out by failing to execute shortcuts, complaining that shortcut or device doesn't exist but if I ask later on in the day the command is executed just fine.
Doesn't happen that often these days but the HomePod's can be very slow to do something like turn off a Hue light, so I'll ask and then its done 5+ seconds later, ignores the command or somehow it's "disconnected" itself from the internet even though my other HomePod's are online and if I ask one of those to do the same command it's done immediately.
HomePod's are such a pain in the ass when it comes to Siri commands, one of the best features of the Ultra 2 S9 CPU is the on device Siri processing which has drastically speeded up how responsive it is. I really hope the next HomePod Minis get onboard Siri processing as I bet this alone will fix quite a few issues.