I haven’t noticed a big pattern in people’s plugs not working through Google Home. I have Indoor Plugs (pre-2021, 2021, and 2022 indoor plugs) as well as several outdoor plugs. I just checked and all my plugs seem to be working with Google Home when I tell Google Assistant to turn them on and off. I am not sure why it’s not working for you. That would be good to figure out since everything is working on my end. I wonder what the difference is. I am currently using a Pixel 5, though I am upgrading to Pixel 8 Pro this week. I also set up my Google account a while ago, so maybe there is something wrong with newer activations.
I know Google Home stuff in general is on Wyze’s fix-it-friday radar, at least it was for cameras:
Maybe go here and leave your info for Wyze just in case it is related to the same issue: