This is the link you just posted. That is 5 hours of mining orphans.

And it's a pool that handles ~ 1% of the total SIGT hashrate. Show me another pool that has that many orphans. You can't because there isn't one.
Besides, my understanding (which may be wrong) is that forks occur when pools are running different versions of the software & with different ledgers. Since these are orphaned blocks, can there really be a fork?
No fork.
There are so many orphans blocks due pool's nodes were behind (slow network due attack).
So it's normal situation. There will be orphans when other synced pools outrun you.
Everyone is aware of that who knows how blockchain works.