I mean, Siri has been bad for what, 15 years now? It does seem like a bt of an outlier.
Gemini only replaced Google assistant on Android a few weeks ago. I gave up on Google assistant a few years ago, but I'd guess it wasn't a worthwhile upgrade from Siri.
Siri got substantially worse over time in fact, I swear it used to at least be able to give you answers to basic facts rather than just offering to google things.