Those incidents are probably the main reason why even someone that may not be a soccer fan may remember Luis Suarez, with the most famous incident being the one at the 2014 World Cup in which he bit an Italian player and he was suspended for months.
I remember that at the time I thought the punishment was too light, as this was not really the first instance in which he has done this and not only he made a joke out of himself, it also stained the image of soccer and the world cup.
It is more easily to remember bad things people did than good things they have done. It is more funny to see drama with many people and those drama is more memorable.
Luiz Suarez is a super star player, I can say he is not a star player but one of super star players last twenty years. He has massive career with many fantastic goals and many big titles but people remember more about his drama than his goals. He did some mistakes but moved on from these and actually improved himself.
We should forget about his past mistakes with poor reactions against opponent defenders, it is not right behavior but it happened and he improved. Now, he is at very last years of his career and we must use very little chances left to enjoy his football.