The problem Persists
Unfortunately, even with the ban of Scholar of the Lost Trove, the problem persists — and in fact, the problem IS Persist. Instead of reducing the dominance of reanimator strategies, the ban has unleashed a wave of similar decks that are now extremely common, especially in Bo1. Persist in particular is deeply problematic (together with Death//Life), as it enables consistent turn-2 wins, which makes for an unhealthy and frustrating gameplay experience.
It is a shame, because Historic is otherwise healthy and interesting. However, this issue risks ruining it, and more importantly, it severely limits deckbuilding creativity: in Bo1, every deck is effectively forced to dedicate 4 slots to Surgical Extraction just to have a chance against these strategies. This kind of constraint stifles diversity and punishes players who want to explore other archetypes.
To make things worse, even Surgical Extraction or its alternatives such as Tormod 's Crypt) is no longer a reliable answer. The problem is that these decks no longer rely on reanimating a single key card to assemble their combo: they run a long series of redundant pieces, making disruption much harder. On top of this, the matchmaking algorithm and the shuffler appear to systematically favour this type of strategy — likely due to programming issues — in order to keep games playable.