It's very easy to dismiss a Bambi's advice when it comes to trading, you're mind will say "Ah, what do they know, they've only been trading a few months!".
But EVERYONE, no matter their experience level can offer you a breadcrumb insight that can lead you to bigger and better trading results.
Telling someone to test a strategy on demo is easier said than done, especially when it cannot simulate the emotional aspects of trading, which in my opinion, are the most important to master.
Not cool and flashy, but psychology gets the job done and gets the trader paid.