I use my Siri on my HomePods to get weather, to make cooking/laundry timers, as my morning alarm, and occasionally for news. That’s it. (On occasion I’ll ask Siri to spell a word or do a length/weight/currency conversion.) Never used it to play podcasts unless I was casting one from my iPhone.
Worst case, you keep the Amazon device disconnected as a fall-back. It might be listening to you, but it will probably be preferable to your wife not listening to you
I haven’t check recently, but are multiple timers still not a thing yet? I have the Echo devices and this is innate, so I’m hesitant to moving to HomePod because of the all the cooking and activity timers that I use.
They’re available but when cooking I still resort to MultiTimer, which I configured for each of my stove’s burners which makes things much clearer at a glance.