The assistant said to say what time and still they gave a place. That’s on them.

Nah, “when I get to this store” is still a time. Android used to be able to handle reminding you “when” you got to a place, but I guess they dropped that feature. So IMO this is on the assistant for not doing what it used to do.

That’s not a time, that’s an event. The event can happen at a specific time, but you only know that time after the fact. So you want the assistant to react to an event, which it apparently doesn’t support.