Feedly isn’t free. Site says basic/free is limited to “100 sources and 3 feeds”. It’s freemium. OP says they have over 100 feeds (which would be sources in this case, no clue what feeds are).
Sorry, I meant if comments are actually available in a majority or even a strong minority of RSS feeds. Last time I tried them, rarely were comments included. And def not for HN, etc.
