We can have both (although I don’t want algorithms by default myself either). Scrolling through everyone’s timelines individually is quite time-consuming. I definitely miss a Fedilab-like “catch up” feature where my feeds are kept exactly where I left off so I can simply come back; or click twice to “skip” and go straight to the top of the feed. Feeds are still linear, but IMO, this is a much better user experience.
Nostur has something like this, but I don’t have an iPhone and I really don’t like social media scrolling on macOS. This is definitely something I’d like to see on Amethyst and similar mobile clients.