Rooms with a high volume of messages will appear to load faster than rooms with a high volume of joins and leaves... So maybe that's what you're seeing? 25 messages appearing at once is a whole lot more engaging than 25 hidden join events.
I'm agnostic about whether room joins or leaves should be recorded at all (I've seen discord bots report this at the server level), but the pain point is that the records are joined with the messages... I also thought redactions were weird. Federation probably requires it (maybe federation requires room events to be persisted in the room history too), but having to load extra events to explain deleted messages will probably clog up the pipeline as well.
Don't mind me, I'm just thinking aloud.
The author of this article spends an inordinate amount of time humanizing an AI agent, and then literally saying that you should be terrified by what it does.
No, I don't think I will, and neither should you. Nothing terrifying happened. Angry blog posts are a dime a dozen (if we take for granted the claim that an AI wrote one), and the corporate pro-AI PR the author repeats is equally unimpressive.