Many of the issues you bring up are problems that those in the IndieWeb are well aware of and attempting to fix or improve. I suspect it won’t take long for companies to begin springing up to make some of the one-click user interfaces you indicate a reality. Why couldn’t companies provide simple services for domain names, hosting, and CMS for the broader public? The function isn’t that much different than that of Facebook or Twitter, it’s just the revenue model that is different (i.e. subscription fees instead of advertising fees).
I would hope that in owning their own web presences that people would take a greater level of ownership and responsibility than they currently do on many social media platforms. However, this doesn’t mean that one can’t have fun. In particular, with relation to meme tools, someone has recently created a gif-related service for posting to IndieWeb sites via micropub. Why should it be any more shame to use one’s own website to post silliness on Twitter? They’re both on the internet and they’re both communication. The small difference is that in doing it on your own website is that you’ve got more control over the content in the end.
I agree with you that RSS and feed readers could be far easier to use and provide additional functionality. With tools like SubToMe, subscribing to or following people is much simpler. There’s also an upcoming wave of feed readers with better integrated functionality for commenting and replying using one’s own website while sending the reply to the original website. (A great example is the one Aaron Parecki is currently working on.) And why shouldn’t this happen? When I think about Twitter and Facebook, they’re simply proprietary feed readers with integrated replies built in. Their problem is that they’re neither open nor distributed which means if I want to converse with friends on any of the hundreds of social media sites, I have to register an maintain an account on all of them that my friends are on primarily because these services are unable to talk to each other. I’ve now got hundreds of these accounts and at some point it’s just not a sustainable model for me. Members of the IndieWeb community are tackling and improving all of these problems because they believe there’s a better way than the current social media models.
You right that services like WordPress lack solid identification in comments, though I rarely find this to be a serious issue in practice. I could just as easily game an identity on Disqus, but it’s more difficult, expensive, and less productive to spin up an entire website to spoof comments using Webmention. The Webmention spec does go quite a way toward remedying this as it allows people a much more solid way of owning their online identity and commenting on other sites.
I think that if you look at some of what is growing out of the IndieWeb community, you’ll find a lot that is moving toward making the web a more valuable and interesting place to be and fixing many of the specific issues you’ve brought up.