If you were some whale and had insider data you wouldn’t do it in one transaction like this. You would spread it out with multiple addresses and multiple hours and spread it out.
This is probably some exchange moving some funds around. Sure it happened during a big event but it was just nothing more than a coincidence.
I agree, a whale will put it in many batches so that it's going to be harder to be traced. But if this is from an exchange and they're just moving it typically, there's nothing fishy about it.
Who cares? Do you care about someone owning a lot of USD or any other currency? Then why should you care about someone owning a lot of BTC? Or better say "controlling", because someone could be holding those coins on behalf of many users, like in case with an exchange or an ETF.
It has became a hobby to check out these huge transfers because there have been software or people that have been monitoring them day and night. Thus, for these people that have been looking forward to have their own investments as well, they think that it's an interesting thing to look at these transactions as if they're fishy.
