Orphaned chains (not sustained forks!) are a natural and can't be proven to be an attack. Even those longer-con chains which orphan another chain which do not fall within the expected variance due to natural orphan rate can't be distinguished from natural (non-attack) network connectivity issues. Also I already explained upthread that an emphemeral fork (which orphans another chain) can't be blamed for a double-spend or censored transaction, because there is no provable correlation. Seems you've forgotten where I had to teach you in my Decentralized thread
why it is impossible for a minority chain to prove anything (because the state of the chain is never absolute w.r.t. to any external chain/clock and is always moving forward). Which is the same analogous
mistake enet made upthread.