I have a question about my Network Engineering Stack Exchange post: Static routes and multiple routers
Is my post off-topic and if so why?
It is about enterprise equipment in an enterprise environment.
I thinks it's off-topic because the primary question is about the consumer-grade router in a home network (see this answer: https://networkengineering.meta.stackexchange.com/a/234/8499 and the one which follows it):
If the Ubiquiti USG is NATing the outbound traffic, then why do I need a static route in my friends router that refers to the 172.27.0.0/16 subnet, isn't this out of context?
The second and third questions may be on-topic, but you need to edit the question to provide the device configurations. I'm not sure why you need to route on the switch; as far as I know, the Ubiquiti can do VLANs. If you want to route on the switch, you should route both VLANs on the switch.