Not as easy as it once was. Security was beefed up with every iteration after iOS 10, in the hardware (post-iPhone X) and the software. 10 was the last good time of jailbreaking ease, where a jailbreak.me type of exploit was released. It’s pure luck now. Most talented developers have either left the scene due to ungrateful people, sadly, or joined Apple’s Bounty program. You can’t tell what version a brand-new boxed iPhone is on because Apple obfuscated the serial numbers. iOS 15 introduced SSV (Sealed System Volume) meaning no touching root, forcing a halt which was eventually solved with “rootless” jailbreaks. They made it harder to downgrade to a jailbreakable version due to SEP (Secure Enclave Processor), and Blobs are useless now because of cryptex1, introduced in iOS 16. This means no downgrades to unsigned firmwares at all except within patch versions (like 16.3 and 16.3.1). iOS 17 could be even worse, time will tell.
I’ve been keeping my eye on the Galaxy line of phones, my last Android phone was a rooted S6. The fact that nearly-every iPhone out there is the same (OS-wise) makes it that much more valuable to me vs switching, since most Androids have easy root capabilities/customization so it’s overlooked. Going out in public and watching confused eyes watch my phone because it looks & acts different from what they’re used to is the beauty and value of it, from my perspective. Not to mention the resale market for iPhones on a jailbreakable version.