silly alcohol distributor web sites

so i work for a transportation logistics company. ive been looking up different shippers around the country and found something very interesting, maybe even stupid, on all of the beer and alcohol distributor Web sites. They all have the option of "if you are not 21, please do not enter this Web site." You can click to put in your birthday and gain access to the Web site which means you can lie about your age and still go in there anyway. DUMB.