The demo is not the product.

I used to judge a tool by its demo. If the walkthrough was clean and the dashboards were pretty, I trusted it.

So I pushed hard for self-hosted PostHog to capture events across our mobile and web apps. The demo was beautiful. Under our real load, with our data constraints, it came apart. built for side projects, not production. We ripped it out, having paid for the lesson in weeks of engineering time.