I’d really appreciate a link to that thread because the theory it proposes contradicts the basic operation of an automation.
The trigger is what Home Assistant monitors (creates ‘listeners’). When the listener detects an appropriate change, it executes the balance of the automation and proceeds to evaluate the conditions (if any). It’s the trigger that gets the ball rolling.
For the condition to be evaluated before the trigger, implies the automation was not activated by its trigger but by its condition. The implication is that Home Assistant has also created listeners for the condition. That’s unlikely. If you create an automation with a condition but no trigger, Home Assistant will force the automation to be off because it’s not a functional arrangement; it has no listener(s).
FWIW, I recall discussing this topic about ~3 weeks ago and I posted an example demonstrating the condition is evaluated after the automation is triggered. If you know of examples where the condition is evaluated before the trigger, I would very much like to see them.