Microsoft and Martin Luther King Jr Day: do they know or care what MLK stood for?

According to Wikipedia, MLK Day as a paid holiday was originally pushed by the Labor Unions and it took a while for Congress to accept it at the Federal level in 1983 with an effective implementation three years later in 1986. It took therefore 30 years for Microsoft to celebrate MLK day as a paid holiday and only for it's already well to do employees, not for its retail employees nor half its workforce employed via suppliers. One can doubt MLK would have approved of such a biased and discriminatory implementation that excludes the very people MLK was the most concerned about. Microsoft was created in 1976 and saw its first public offering in 1986, the very same year MLK Day started to be implemented. In The Other Microsoft, Philippe Boucher quotes from the famous  1963 MLK's Letter from a Birmingham Jail as an inspiring example to fight against the injustice done against the low income employees: "Oppressed people cannot remain oppressed forever". Has anybody with Microsoft even read this text before deciding to offer MLK Day as a paid holiday to a fraction of the employees and claiming he is part of Microsoft's culture?