Although, it's not every type of gambling that a non gambler can talk about without having the experience.
The expert ones will be able to give valuable insights that not beginners will be able to share the same level of their success.
It might just be a discussion but the ability to give value ideas and thoughts will be based on the experience that the person must have heard, it's not just about witnessing some gambling events but it's also about contributing positivity is gist related to gambling. Take for example, some non gamblers who make post on this board, you could tell through their comments that they don't have real experience in gambling. Take for example, when some gamblers are talking about poker games and strategy and you have not played the game before and doesn't know any strategy about the game, there is no way you can contribute to such discussions.