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I think they have been running a campaign for a long time now, they invest a huge amount of money [...]
ya.ya.yo!
Obviously, they would have a lot of money because they have been scamming people for the last 5 years. --->>
List 1xbit scam accusations. Scamming gamblers since 2017 and I think it is not a big deal if some of that money is allocated to people like you who are always willing to defend these scammers here on this forum.
They have Millions of funds to lure players , they can do here and there so searching maybe helpful but still this scammer will do everything to make their bags filled with scam funds.
They need new people to keep up their scam. Therefore, they pay a lot of money to YouTubers and bloggers to say good things about them so that their viewers/readers get attracted to their casino. And deposit money in the lure of the bonus, after which everything will be fine as long as they keep losing, but if someone ever wins, their account will be suspended/blocked. Reason suspicious activity.