Most common scenario is that these influencers does have that unlimited fund that they do have into their gambling accounts which means that betting would be sky is the limit
and when they do hit up big multipliers then of course the winning would really be big on which it could really poke up someones interest on playing too
and this is how marketing works.
Viewers wouldnt really mind on how much that player had lost when they do play up and since theyre been funded then betting behavior would be totally different.
Fairness can be seen though and you could spot out for experienced players but for noobs then everything would be plain and simple.
It doesn't matter if it's a live stream with an unlimited account or a video.
I am sure that it is no problem for the casino to create an account where the deposits look like real, which is really a demo mode. It is even easier on video, because they can publish only parts in which someone only wins.
Either way, it is a very effective trap for young people who have never played in a real casino before.
This is somehow effective marketing method since it can describe easily on how their game works and there's no problem with it since they are just doing there job and if they show negativity then for sure they will not get good result for their business so its up for people on how they take those videos they see since if they live up on their fantasy to get rich easily by playing on gambling and follow what they see then they will have a problem with that.