Sure, I use Feedly myself, but RSS is increasingly marginalized. I use to follow blogs, but it's not usable for mainstream media, Reddit, HN, etc etc.
something like RSSHub can be used in conjunction with your RSS reader and will generate feeds for sites that dont have them. RSS-Bridge is another option
> Reddit, HN
Hacker News still has a feed (that's the only reason why I saw this thread). And Reddit gives you a feed for your subscribed subreddits.