Well the use of scientific and even graphical calculators didn't help for sure. No one memorized cosin tables anymore and it's not like it was hard.
Sure it allows you to give out problems to students with wierd angles but working at 15 deg incriments and giving harder problems like they did in the past is far better in my mind.
I did some tutoring for high school and college students like 10 years ago, even grade a students that picked the hardest math difficulty (you can choose 3 difficulties the hardest is pretty much a requirement for math oriented degrees later in uni) didn't knew what a logarithm was beyond a key on their calculator, same goes for other basic functions like factorials.
They were petty much parroting and operating a calculator rather than doing math.
