Binance BNB had been doing buyback programs, don't know if they have stopped, burning some part of the token I mean. Each time the period reach, BNB price rises upward for a short period of time.
Some projects who have real good intentions often become successful when this program is implemented especially when they keep to their words and experiments it consecutively.
Some promises it and never get to execute that plan, they often fail and never buy back causing the token to loose liquidity and price dump.
They haven't stop according to them but I don't think the team is transparent like before, that's the problem of buyback, the team don't let you knkw how they do it. You may see the exchange make an announcement next weekend or next month that they have bought $20m worth of BNB and they have send the token to a burn address but there is no way to confirm it because BNB is a liquid coin that has millions of trading activities going everyday, you wouldn't know they do a buy back.
Honestly, I don't take buy back a credible thing to rely on. If you have a coin you afr holding and you are affected and the team says they are doing back to keep the price okay, you may want to wait until the price make a recovery otherwise, I will strongly advice you buy a coin that does not have a buy back, most of them are waste of expectations, they will never meet them.