It can't be one random case. They either have a built-in feature to block suspicious transaction (after screening them) or they don't.
Now looking at this[1]. It's possible that the issue might be related to this new NEAR INTENT integration, as opposed to Thorchain (the protocol itself)?
Cause if I remember correctly, when Bybit got hacked, funds did go through Thorchain and I don't believe there were ever blocked. Sure, you can do things on the frontend side (like Chainflip did if I'm not mistaken), but not on the protocol level. I could be wrong though, cause I'm not following the developement upclose.
[1]
https://www.binance.com/fr-AF/square/post/26933087279161