Been doing it for 30 years....been around others doing it for that long....I have yet to ever see a tree split from it. I have had some roll off the bucket or blade or whatever, and go sideways....so, yeah, if you're in a spot that is tight about where it has to land, pulling it with chain or winch to give you almost the exact drop spot is the way to go.
The fact is you are many many more times likely to split a tree sawing it down. Browse You-Tube....there are dozens of examples of "oops....that one nearly got me !"....and those are just the ones that made it to video.
Improper felling notch, or not using one at all ("hey....it's leaning 25 degrees that way, it HAS to fall that way...start sawing"), tree splits right up the heart, half kicks back in the sawyer's face...
OR not staying with the felling cut.....novices tend to back away as soon as the tree moves a bit, but they haven't sawed up to the 'hinge'....which often causes the tree to split, and kick back right at them......
OR they cut all they way thru the hinge, and the tree jumps the stump back at them....