Yes, that's a pretty accurate statement. Since the drill started attracting screamers, its use has become somewhat complicated. And mining has changed a bit. If in A21 it took 2 hits on coal and saltpeter and 3 on lead and iron to break an ore block, then in 1.0 it takes 1 and 2 hits respectively. In A21 there was a chance to break a block with 1 hit, after reading books on mining, but now there is no such bonus. The drill is now somewhat less interesting than before.