I absolutely agree with you. It was a strange post by @Baskin198. Primedice is well-known casino with great reputation. They have already paid out tons of massive winnings to various lucky winners on their site.
Sometimes they post about big wins on their Twitter account. Check out this, for example:
And if the user wouldn't be able to withdraw his winnings, we would know about it.
This is a normal characteristic of Primedice, they are always very responsible when it comes to prizes, and this prize is just a small sample of what they have distributed, the good thing about Primedice is that it has players who are practically whales and they make incredible bets Personally, I would like to one day reach their level to make that type of bet.
Entering primedice and playing is quite a good experience, besides the players there do it like the professionals, it is also that the regular players have the same opportunity to grow and have an experience within the platform and as a player.