Well, if it helps you, if there's no urgent need to switch, you don't need to, you're missing out on some good stuff but nothing that can't be done during the next setup or so. I had to reinstall anyways at one point, initially thinking it'd be Arch again, and then after testing NixOS decided to go that route, the Secure Boot functionality with Lanzaboote was a strong plus. On the other hand, adding your own packages to Arch is somewhat easier I feel, they're both good distributions, you're not making a mistake with running either of them.