Agreed, the brass is thin and it's easy to deform or crush a case in the neck area if you're careless when placing the case in the shell holder during handloading steps. I've ruined a few cases like this; same goes for the .22 Hornet and other thin-necked cases.
I've loaded the .32-20 for a couple of rifles and one revolver beginning forty or more years ago. I don't recall ever losing a case except for the reason cited above. I've never had a neck split and cartridge life with cast lead bullets (all I've ever used for handloading) and standard pressure loads is as good as with any other cartridge case - a very long time, but I don't count the number of loadings.