when you move a large amount of cryptos to an exchange it is seen by the market at large as a sell signal

when a large amount of cryptos are moved off of an exchange, it is seen as a bullish signal because it means that they will be chillin' for a bit and not actively traded.

a bunch of weird Tether IOUs being moved off exchange might mean they plan to redeem these for dollars (idk how this even works) or they might be doing a bunch of OTC trades, or stackin NFTs or something

Can someone unpack “stackin NFTs” for me?

Buy overpriced NFTs in exchange for UST and hold them until they find another greater fool to resell the item to

>Buy overpriced NFTs

Is there any other kind of NFT?

The underpriced ones

I think what they meant is that Binance may be using the funds to buy NFTs

Nothing, large exchanges rotate their cold storage around all the time for all kinds of reasons, every time this happens a bunch of people on Twitter go wild and it's a nothingburger 99% of the time.