It would make sense for them to exit scam on a very large TX like this (>2.5BTC)
Wait patiently before accusing them of such thing.
2.5 BTC is definitely
NOT an amount worth having their reputation tainted, specially when they have already paid over 620 BTC for their signature campaign on the forum (1ChipWGhJtEWCeSq3cra4HmKhvYqe8Tvty) and have handled a volume of at least 4836 BTC (see the
Binance hack).