Definitely most of us here are aware and already heard of that sentence countless times. Recently I found something related to, there's a guy who lost few thousand dollars worth of crypto in two weeks of span times and tried to blame gambling influencers/streamers (or whatever you called them) for its losses. afaik the mentioned influencers didn't take responsibility for what happened to him.
I'm sorry for him, I'm posting its case not to judge. Meanwhile, it could be a good lesson for us to not repeat the same mistake.
It's tough to feel sorry for this person really because they essentially tried to take a shortcut - either he was going to lose money or someone else was going to lose money. It's his partner I feel bad for, I hope he learns a lesson but many times people will make the same mistake especially when driven by greed. There is no problem with influencers pushing gambling adverts but if they are paid to do so it should be clearly marked otherwise it is clearly deceptive. There are laws in some countries that require this disclosure but it can be hard to determine and enforce.