Glad to know I’m not alone. Also, Proton’s offering to be a replacement to the big wigs - as it turns out even the little people need their emails and calendar. I was kind of scrambling to think of what I could do as a work around and pretty much settled on I’ve got nothing.
Late to the party, but it seems IceShrimp doesn’t have the same built-in import feature as Sharkey for all posts. IceShrimp also doesn’t have any of the gamification that Sharkey does.
I can’t tell about Misskey, but there’s some mention of a tool.