I have had problems with those tasks
The screen completely freezing, requiring me to restart the computer and lose everything i have not saved; putting the computer on sleep sometimes wouldnt let me open it unless i held the power button to shut it down and then restarted; connecting the certain wifi networks doesnt work
These arent enough to stop me from using linux, but other people probably wouldnt ignore them so easily
Ive seen people search more for reason not to switch to something new compared to reasons for switching