I would think that a shorter slide (or no slide) would put extra pressure on the knees.
In addition, it could result in balance issues of its own, particularly for older bowlers.
I'm a senior (old schooler). A while back, I attempted to shorten my slide in order
to develop later timing. The idea was to be better able to develop more hand leverage at release. The end result was that it simply didn't work for me. It created more stress on my knees. As a result, I abandoned it and I have resorted back to sliding.
Of course, everyone is different. What didn't work for me might not be your experience.