In the case of FJ I have seen most of its current banners branded with no KYC on telegram, have these guys rebranded

FortuneJack hasn't rebranded, but they have changed the license operator recently. FJ has moved to Anjouan now, they were operating under Curacao before. But their KYC verification rules is still same as it used to be before. I'm wondering why they have started to address themselves as 'No-KYC' and saying that 'KYC are rarely needed' on the telegram channel. Most of the time casino enforce those users to complete the KYC verification who take welcome bonuses.