it's unavoidable to center Elon here but can we just take a step back and appreciate how stupid, bad, and completely antithetical to a usable website this idea is? blocking has been a feature on like everything since phpBB forums because it literally just works. it's an easy way to curate your experience without escalating and it's a logical imitation of being able to simply avoid a person in real life. the idea of removing this in favor of nothing but mutes is just goofy as fuck (and if you make muting the new "block", what's even the difference between them? people will just use them basically the same way!).

It's interesting to me that they made the argument that blocking is increasing server costs.

How is that even possible, on a technical level?

If true, how is changing to a "stronger mute" going to reduce said costs?

I mean, it's plainly clear that Musk has no idea what is going on at any of his companies and the narrative of him being a genius of some kind was simply that: a narrative.

I expect it's accurate to say; their architecture is not like a database where you can add an index on a blocked state and then join against it. You have to get a list of potential posts that the user might want to see and then eliminate any in the block list. There will be a few edge case users who have thousands of block entries and a multithreading strategy is likely required to swiftly filter it in a reasonable timeframe.

However, an architecture I've seen that works around this is to build this timeline in the background and present it to the user from a cache, I don't know if this is what Twitter does as I never worked on that. However, if you want to not have a block feature but have some kind of mute feature anyway I don't see how there is a meaningful difference.