It’s not paywalled but it is behind an obnoxious cookie prompt. You can hide it with most browsers (iOS Safari or UBlock Origin in Firefox are two examples) and access it anyway without consenting to their cookies.
My parents have taken this test and passed but it is purely a memory test and full of questions that the vast majority of British people would never know. Many of them aren’t even taught in UK schools. I firmly believe that more than 50% of British people would fail this test if they were asked to sit it tomorrow.
You can find many practice tests online by searching Life in the UK test and you will be able to see the absurdity of some of the questions.
I’m pretty sure one of the questions is what day is Christmas Day? I’m not too sure what this has to do with Britain as most countries in the world celebrate it on the 25th but it is a free point!
This is not even mentioning the cost of over £2000 for the citizenship and the mandatory ceremony when you pass.
Hasn’t it already been patched? https://github.com/jellyfin/jellyfin-ios/security/advisories/GHSA-7qhm-2m45-7fmh
Furthermore, OPs post seems to link to the patch: https://github.com/jellyfin/jellyfin-ios/commit/109217e75f38394b2f6e46e25dfe5a721203d3c8