I don't judge people by when they joined because even some of the oldest members on the forum are idiots and some recently joined members are pure gold. But really when you are accusing a giant casino and sportsbook like stake.com you must offer some proofs or anything that can back your claim.
1.7 BTC is not a small amount and maybe that is the reason why an investigation is going on, although I have friends in stake chat who have withdrawn way higher than that without any problems.
Also since you are new, I suggest you to use the right section of the forum which is Scam Accusations section for posting these kind of reports. But I repeat, please don't even bother creating a thread there unless you have been actually cheated and have enough evidence to back your claims. Every time someone comes with an accusation its stake who comes out true at the end.
Unfortunately there has always been this kind of stuff going around in the crypto world at all times. Stake got too big and that is why there are a lot of people coming down on them. I know that newbies are not really down with bitcointalk as much as they should be, and they are learning the ropes, but the reality is that we literally have a "scam accusation" section in the forum and it is hard to miss, it is really near impossible to not see that.
So, if anyone has any grievance with stake, they could simple provide proof of scam and start a topic with all of those data to show the world that stake has actually scammed them. It is quite simple really, you provide every detail you have, and you show the world that you have been wronged and people will support you and blame stake for it. But I haven't seen even one single person who could provide proof of such a thing in all these years.
The guy posted screens of his big win and that they dont give him any answer whats going on.
Looks pretty shady to me.