In my head, Hera is more of a merge of something like apple reminders and apple notes. More of a single-player experience for productivity.
Superpowered has a bunch of similar concepts - however their launch claims that meeting events won't be the focus forever. Moving to github and slack soon. So we'll see.
There are a couple others in the batch that will be launching soon that are loosely competitive.
I think it's part of a broader recognition that people who "live out of their calendars" weren't having an easy 2020.
For what it's worth, we think meetings are the means to the end not the end, not the end itself.