Free throw shooting has always been radically better, the game has always been 8 minutes longer than college, the shot clock has at times been MUCH shorter and still is.
So you always had those things making it look like defense is bad vs college (that stuff alone is like 20-35 points a game for both teams), but now in past 20ish years you've got 4/5 players who are some of the greatest of all time shooting 3s. Even guards in the 80s/90s weren't shooting the 3 as well as Joker and KAT do now. Joker can shoot 3s into the atmospheric weather system and swish them while closely defended without even moving his arms, just flicking his wrist.
The only player on the entire Indiana team who's not a deadly 3 point shooter is the short backup point guard and even he would be a great 3 point shooter by college standards over course of his career. Every single center and power forward on the team would be among the best 3 point shooters in college hoops.