I had Android, and then whole family switched to Apple (iPhone 5 and on) for ease of UI and reducing UI frustrations and missteps.
With that said, I now have my iPhone X and a second line for my new One Plus Nord 10 5G which was really inexpensive to buy in March 2021. I use both iOS 14.7.1 and Android 11, respectively.
With that background, Google Assistant is miles, and maybe leap years, ahead of Siri. If Siri has a weak internet or cellular connection, you can forget using it. Hmm, just a sec, still working all get pretty old to the point that I fret even asking Siri for anything.
My iPhone X is currently my primary which will likely be “soon replaced” with an iPhone 13 - mainly to stay compatible with my family.
My Android-based OnePlus is my reliable secondary phone and Google Assistant works fast and like a charm. Siri needs serious re-work to be functional and reliable especially with poor connectivity.
I love my Apple products but Siri is mostly sidelined in my household.