This is a nice aggregator! I notice there's no search bar on the tag page but found I can just modify the URL to filter on a tag rather than scrolling through the list.

Your tool looks like a great start, but I think it could use more types of search filters. A vibe type filter for the kind of tone the blog has would be useful, eg. educational, entertainment, provoking, relaxing, etc. A screenshot of part of their home screen shown on the info card for the blog would also help show the visual asthetic and vibe of the blog. It would also be nice to have an exclusion filter if you don't want to see certain subjects or people. Depending on the personal and compute time that you have for this, you could even get fancier and have filters for the average estimated reading time of the blog (eg. do you want a blog "snack" or a blog "meal") and its reading difficulty level?