CZ of Binance very recently said that new money in form of stablecoins is entering his exchange, and with how more USDT is being printed, this doesn't come as a surprise. We'll see where it goes, but being bearish for too long can be harmful too.
No doubt the market has exhibited strong demand, and for the first time since last year. So we should expect some money flow into exchanges as shorts close and last year's sellers buy back their coins. But after the market has risen 75% from the lows and approached major resistance, I think it's only sensible to start locking in some profits and looking for shorts. I'm turning bullish on the market myself (long term) but realistically it'll take several months more action to confirm a real reversal.