> Sometimes I wish I had a searchable full text index of articles I found interesting but didn't see value in bookmarking

I hope you won't mind this reply that isn't related to the topic, but this part of your comment stood out to me.

The way I get around this is by just saving the bits of articles I find interesting for later full-text search, and on the side I make topic-specific feeds of what I'm saving available via RSS for others to subscribe to.[1]

This paradigm shift from saving/bookmarking entire articles to saving highlights has worked really well for me, maybe it could work for you?

[1]: https://notado.app/feeds/jado - I run the service my highlights and feeds are hosted on, but if you're not interested in a subscription service that does this I don't think it's particularly difficult to spin up something yourself over a weekend or two