If you watch professionals, or high level players, you notice they do NOT instantly go for the knife for the anti-revive, they clear out an area, THEN kill all the downed bodies. This is because you don’t need to immediately kill the bodies if you are pushing properly, so as a group, because no medic will be idiotic enough to run into that, because they will die doing it, along with the person they revive.
As for the turrets, try shoulder peaking, or using nader, fragger, or standing far away and aiming well at it. The turrents aren’t very high health, they only have 120HP, about as much as another player, and they have a max range, AND they don’t instantly attack, they have a delay, AND they are stationary.
So really, they neither are all that bad.