To be fair, some legacy wired systems can get quite complex when you have all the wires going to a central control box, then all the bells need to be wired too. It doesn't help that historically all the keypads have had shockingly bad UIs and everything locked behind engineering codes (some of which you can just google now)
I'm not a professional installer, but I've installed full wireless AJAX systems and I've upgraded the wired bell box on my landlords very old wired system and it's easy to see how complex they can get. Especially when trying trying to mix old and new tech.
The new modern wireless ones like AJAX's entry level consumer ones really do make it a million times easier to install and configure if starting from scratch and you're happy to go completely wireless. They still have their wired Fibra line though for retrofitting older wired systems, or even new systems that are wired that can't rely on wireless, you want more reliable wired, or have commercial wired requirements.
Like yourself though, I would personally probably avoid Ring and Eufy etc. I'm sure Ring is fine, but I don't like the Amazon association and I detest the bright blue bell boxes. Plus after using all their cameras and realising how poor the quality is really compared to proper CCTV systems it makes me question their alarm (even though I realise it's a totally different and new product from the camera company, which they aquired).
My first choice would absolutely be a AJAX, and they now have their own NVRS and proper IP cameras which I haven't had a chance to try yet, but look good. I'm sure eventually Uniif will come out with their own gear, but they're quite far behind at this point and I dread to see the cost, knowing how expensive their cameras are.