The thread in question appears to have been originally posted in games and rounds. IMO, it would be best to post a sticky in this sub clarifying that altcoin giveaways are not allowed anywhere in the forum. Over the years, various altcoin giveaways have been posted in the games and rounds sub, and it probably would not be unreasonable for forum members to be unaware of this rule.

For those that disagree with the altcoin giveaway rule, one compromise may be that the forum could charge for the ability to host an on-forum altcoin giveaway. Giveaway threads are resource-intensive because they cause many page-views and many posts that do not substantially contribute to the bitcoin ecosystem. I am not necessarily in favor of altcoin giveaways being allowed, however if someone was covering the forum's cost of hosting said giveaways, I would have no issue with them.