IMHO aUrooj inflated life jackets generally make no sense for kayaking. It’s too easy to end up in the drink casually and it’s like $60+ per re-arming kit.
Are those fishing kayaks so stable that they have very little expectation of going overboard comparable to being on a powerboat or sail boat? I use touring and whitewater kayaks myself.
I kayak and sail so I have life jackets for both use cases (two type V rescue jackets for kayaking and 4 type V inflatables for sailing to accommodate friends and better the much safer European spinlock deckvests, which are not USCG approved, so I keep USCG approved inflatables on board too)