Recently, as everyone has been watching large transfers on the chain and fluctuations in hot and cold wallets on exchanges, they've started interpreting "smart money." I also pay attention, but don't be too superstitious. Actually, what you see on your phone as "on-chain" data is often the result fed to you by nodes/RPCs/indexers. If there's a hiccup, rollback, or re-scan in the process, you'll be a few minutes late or even a bit behind. To put it simply, what you're seeing is "someone else's curated on-chain data," not the real-time feeling of running a full node yourself. Anyway, when I encounter sudden mass transfers that flood the screen, I first switch to a different RPC or compare several explorers before deciding whether to fill in the plot myself... Forced to go online due to OCD.