Those updates are easy when you have to release an system update to update the safari browser. Hell, you could call it a major security fix and fix some security issue on an old phone and every fanboy would be like "OMG iPhone 3s got an update.🤤" whereas Google can just ship browser fixes over the app store.
And version history means jack all when you can just name releases as you please. Google has been doing the same thing last 5-10 years. Emoji mixers, magic cleaner, launcher with google search bar at the bottom, turning a toggle into a big button on nav bar, enabling aren't major updates. Sure there are underlying changes, but they're mostly security patches and bugfixes. Android is still a bloated mess that needs ungodly amount of RAM and processing to keep even few apps running reliably in the background.
And guess where did Google learn this deceptive "long term update support" trend from?
The only thing they'll need is to decouple chrome and require a system update, and they could be providing updates for a decade.