@joeyh Thank you for the recommendation. I hadn't heard of Phanby before, but I've been trying it today, and it's overall a much nicer user experience than the native UI of Mastodon. I've not had any big problems so far, but it'll take a while to find how to do all the things I'm used to doing with Mastodon.
Overall, with half a day's experience, five out of five stars. It's easy enough to try, for anyone curious.