This is a mess. I see a lot of good users are ban because of this. I was in the same position few months ago but difference was that I was not participating but made a post for some other reason however I was banned too. Later mprep unbanned me.
Regarding the rules, I think this rule should not be applied such a way. I see a lot of users were talking about trashing it when such thread appears and this is the right thing to do imho. I am lucky that I did not see the topic at all or I would join since it's was from bitcasino. With bitcasino.io and sportsbet.io I have good relation and I never miss anything that come from them.
Point is I would do the same mistake even after I was banned not very long ago. This rule just do not click in the mind. Also it's very hard to identify which is a giveaway, at-least for me.
On-forum altcoin giveaways aren't allowed on any board. Games and Rounds allows thousands of posts in a thread for a very small amount of Bitcoin, but it has to be Bitcoin.
The number of victims/mistakes proves that, this is a confusing rule. Just trash such kind of topics so that general users do not get affected.