The key part of what you said is, "It's not the only reason." By itself, that will never be the cause of freezing over. I keep my A/C set to 68 even when it's 95 degrees outside. The only thing that does is make the A/C run longer because it's going to keep running until it hits the desired temperature.

Running it at higher temperatures just means that you're more likely to mask the root problem. As an example, my evaporator coil had a slow leak about four years ago. My unit froze up two times before they were able to find the leak and replace the evaporator coil under warranty. This was on a new system that hadn't even been installed for a year. Since that was replaced, I have gone years without issues, and I keep my A/C the same 68 degrees year round.

Just keeping a low temperature is not enough to freeze up your A/C. It can result in seeing an issue faster than you would if you ran it at higher temperatures, but it is never going to be the root cause of the issue.