They are scam or not? Can we play safe and withdrawal our winnings or not?
Checking the link you have posted and disregarding the reputation of that "game-protect" here in the community and just by using our "common sense", why still play at those sites? That's not even a question in the first place.
Head to the Gambling section and you will see lots of those reputable sites around wherein you can also see real feedback and experience from several users instead of picking at that list. License for me is not really necessary as long as the sites successfully built a good reputation for long. Chances of them of becoming a sh*t gambling site won't likely to happen, at least, providing how difficult it is to build a reputation from scratch and compete with other popular gambling sites.
if nothing else, the massive list may help a newbie, who is not part of the forum, one way or another. because for forum long time users, we already know where to go, who are reputable casinos that you can play with without worrying that your funds will be stolen.
as the reputation of game-protect is very shady in the forum, in some ways, he may just save one life of a person by posting that article.
about the number of crypto casinos using the same gaming license from Curacao! Please take a look at this post: