With Judo the IJF have made quite a few changes with no leg grabs being the most obvious one. I believe it was to try and combat the very negative sambo style fighting of the Russians and Stans which resulted in a more wrestling style grip.
They also made it penalisable to avoid taking a grip or preventing your opponent from gripping to actually encourage more throws.
I’m sure this has resulted in more upright or classical judo which suits the Japanese or Koreans but like in so many sports Defense can outweigh attack and counter throws are often the most likely way to score. I stil enjoy watching it but wouldn’t subject my friends to it other than highlight reels.
I’m lead to believe that the introduction of the electronic scoring has greatly affected how TKD is fought as before the kick or punch had to obviously move the opponent and make the reverse or more attacking moves higher risk as it is easier to wait and then counter those.
All these changes were likely made to try and broaden the appeal and make it more TV friendly but have had unplanned conequences.