Both can be true, but it isn't in this case because his instructions are being followed and executed, even to the detriment of the players and their health - no matter what, they come out again and again chugging away aimlessly following a plan that's doomed to fail from the outset, or at least one that ensures another horrible day at the office win, lose or draw (we never look good or comfortable, even in the vast majority of wins).
These players need culling and that's not something I refute, but there is a scale of a relativity to the league, and the only reason why we top the table for shots conceded and aren't one of the relegation teams in that company is because of the relative quality of our players - but relativity has top end, too, and that's where no matter how much effort we play with, without superior coaching and tactics, the sum of these particular parts is around abouts where we are. That tells a story in itself because to get to the 4th position in the final table, we would need the coaching to make us better than the sum of our parts, and that's what isn't being bridged, not even close to it.
Even if these players are arbitrarily 4/10, the coaching and management of them has been 2/10 (worse); if it had been 6/10 coaching, ten Hag gets to comfortably point the finger at his charges, but as it is, it's the other way round - this guy has nosedived the plane and done a horrendous job this season.