As a creative developer, my job is basically to make short life websites. Her is the way most of the websites I do are considered: when you make a communication campaign, the website is one of the medias used, like tv ad, print ad, ... So the websites only last for the duration of the campaign. Consider them as ads like any other print/tv/radio/.. ads

Let me tell you that all the considerations on accessibility have never been even discussed or even a few times laughed at.