Ok, so you are saying this is business as usual, and the theft is exactly what one should expect, as with any other store of value.
I find something odd about this, because it seems to contradict some of what I understand of the arguments for bitcoin.
However, there is merit to your point, and if something is working as intended, then nothing was attacked in the first place.
The argument for bitcoin being secure is more along the lines of "if you store your own bitcoins securely nobody can take them from you". Storing them securely is easy in principle (just keep them on an airgapped computer, or write the key down on paper, then "just" do physical security well) but hard in practice (major security-convenience tradeoffs). However, storing your bitcoins with a major provider like binance has a terrible track record and not something the hardcore bitcoin advocates actually recommend