why "other cryptocurrencies"? this is bitcoin moved

and no it does not suggest that at all. neither  does it suggest a drop. people always tend to get over excited about seeing a large amount of bitcoin moved (this is not large though lol).

generally all you can say about these transactions  is either:
- a service is moving coins in or out of their cold storage like exchanges combining lots of inputs into one and putting it in one place
- a whale bought some coins and moved it to their cold storage. which is usually them buying coins off the market so that they don't push the price up, they keep it low while buying elsewhere...