Maybe a lot of the people coming here actually do want chronological feeds. I know that's what I actually prefer. A smaller follow list in chronological order. Both could be catered to of course. Or a chronological feed of a smaller list of people. But you're right. However even when clients do implement them, they likely won't be the default. And for it to catch on, a big client needs to default to this algo. The chronological sub feed for YouTube exists and is better for seeing the actual content you're subbed to. It works better for most people than YouTube's home page. But the default home page is how 90% of people use YouTube.
Discussion
The people who remain on nostr (1% of npubs who tried nostr) have self selected for this chronological algorithm
Don't default to an algo. Provide choice of algos.
Not all clients but I really think nostr actually needs a client with a default algo that isn't primal.
As a user who is established, and has a good selection of people I follow, Amethyst is great, I love it.
When I test it as a fresh npub it's a nightmare. A global feed filled with hardcore porn and Bitcoin price & op_return bots. Discovery exists, but it's buried a few clicks deep.
A client for new users & lurkers would go a long way. Or a mode in existing clients to help new users take their first steps.