Having both, I use the knockout block on the rare occasion I want to remove a feed. Mine came with steel drifts so that seems similar, although I appreciate the idea of using a suitable short wooden dowell (or chopstick) as a drift.
My reasons are two: firstly, the knockout block typically has more, and more suitable, hole options; secondly, the block is normally wooden, not hardened steel like a staking set table.
The forces on the section when you punch the feed are no less than on the feed itself, so cushioning the section fractionally on wood looks safer than against hardened steel. Without the dense core of the feed, the section is quite thin.
Anyone owning three or more working pens is in no position to disparage choices by others.