iOSification can come in two forms: aesthetic and functional. The aesthetic changes don’t worry me in the least. It’s the possibility of the eventual removal of macOS features that set it apart from iOS that would be concerning.

Consider adding Ars Technica to your list. They aren’t specifically focused on Apple news, but a couple of their journalists do routinely offer some fairly balanced reporting on Apple affairs. Plus, their Android expert is constantly comparing Android devices to Apple devices… and he very rarely gives Android a total win in any given comparison. I think it’s quite amusing to read, actually.

Apple tech specs online says that it’ll support up to 16GB – but sometimes their spec sheets lowball the actual compatibility. At any rate, you can be sure that it’ll accept at least that much. (Source)

And maxing out the RAM is always better for performance, regardless of whether you’re using macOS, Windows or Linux. (This is doubly true with older hardware, such as what you’ve found.) The question isn’t, is more RAM a good idea… it’s, is more RAM worth the cost. And with a 16GB RAM kit for that system going for about $16 on Amazon, I’d personally say go for it. (Double-check that I’ve found the right link for you, of course, just in case.)