At the urging of @coldkennels, I’ve installed the Classic Editor plugin for WordPress. Maybe writing the old way will be less annoying. Also recommended by him was the “Hide admin notices” plugin, which is supposed to minimize the annoying nagging to “Upgrade to Premium”. I did see that even that plugin wants me to upgrade, which is a bit ironic, but oh well.
I’m conflicted about using WordPress, but without a meaningfully better everything-including-kitchen-sink option, I need WordPress for when I’m in that kind of mood.