Node-Red for Alarm Monitoring?

I currently use Home Assistant with a Z-Wave hub for my home's alarm system. It seems to run okay, but it also does seems like more of a hobbyist project than a rock-solid platform for a home alarm system.

Would Node-Red be a more suitable platform to handle "automations" like the triggering of alarms?

Probably yes (due to less moving parts)

Best way to find out is to give it a go.

This forum is full of helpful folk who can help when you get stuck.