Easy to see they don't have Android 17 yet on their website so cannot get all security patches. The claimed patch level is about a month late.

Search online and see reports updates slow down cause they're busy. Maybe newer phones get faster updates for a year then slow down to every few months. I found that by googling.

Found a post on the FP forum. FP4 was released with support for 5 years but SoC was only going to be supported for 2 more years so no firmware updates for 3 of them.

idk why you ask GOS these questions. They know their stuff and shouldnt have to do research for people like a LLM. I didn't know and used Google and found enough to believe what they say.