I have to agree with you. I'm am Apple user since early 2000s and I'm only on my third Mac. My wife swapped her iPhone last month just for the 2nd time since 2016.
Not to mention that in all of these cases, our previous devices were still up and running and we managed to sell them for a fair price.
Usually the people I hear claiming Apple devices are disposable never have really bought/used them.
I imagine many/most things, specifically here phones, are like this. They (can) keep working just fine even after they stop being supported by the manufacturer - which, arguably, should longer for most things - but some (many? most?) people balk at continuing to use them. Seems like planned obsolescence to drive continued new sales - and generate a lot of eWaste...
Others are content to keep using a device until they literally can't. For example, my first cell phone was a Qualcomm QCP-1900 I had from 1998-2015 on PrimeCo, which became nTelos, which was bought out in my area by Sprint, which wouldn't support the phone's spectrum. I then had a Kyocera HydroVIBE from 2015-2021 on Ting/Sprint until Sprint was bought out by T-Mobile who wouldn't support CDMA and required VoIP (which the phone didn't support) - it was also on KitKat and just stopped getting play/app updates. I currently have a Pixel 5a on Ting/T-Mobile ($17.34/month, btw), which isn't getting Android updates but still gets Play and app updates and still works great.