Worse yet, reporting spam doesn't seem to do anything…

This is my impression too. The web app is just a viewer for now—largely for navigating prototypes, leaving very basic comments, and inspecting.

The real-time collaboration limits seem to be:

1. Sketch 70.6 or later
2. Mac app only
3. documents must live in Workspaces (aka Sketch Cloud)

What bearing does this have on design?

Nice work. I appreciated the Open Type features section. On & Off states and the definitions are a friendly reminder of typography concepts :)

However, Sketch's latest versions already allow the user to edit symbols for elements within styles.

What is this referring to? I thought overrides had been around for years?

This seems like just another opinion stated loudly with a link bait title. Even an anecdotal usability test with a handful of participants would go much further at establishing this argument than simply stating it as fact.

You don't mention it explicitly, but I dig how much of the customer experience shines through in how you present the logo. Well done.

I like the perspective of procrastination as an issue of regulating emotions, not managing time. What Motivates Getting Things Done by Mary Lamia goes into much more depth on this https://whatmotivatesgettingthingsdone.com

Good overview. I'm a fan of labeling assumption-driven personas as "provisional personas" and elaborating on that up front, in case more research isn't done to back things up.