I remember in the last 6 months hearing news like that several times just before the price dropped.
These news have to be analyzed together with another indicators. It might be that people are gathering their BTC on exchanges in order to dump them. And once the price started to move down another people that hold their crypto on exchanges may consider selling their coins. Have no idea why someone may consider growing amount of holders on centralized exchanges as a positive sign.
That is normal cycle for people who do trades for short term especially huge whales who want to have quick profit from small movements that's why we need to be vigilant especially if we are not a whale since some movements can be consider as bull trap so better be aware on some manipulative tricks made by whales and mainstream to avoid being a bag holder.