Many platforms have COBOL as option but not [insertYourDiscriminatedSkillHere]

Have you noticed that some skills are negged or downplayed? Even if they aren't legacy they are not being included? This triggers an ethical discussion: is okay that market has more demand on X1 and less in X2 but is not okay to pretend X2 doesn't exist. Whoever is in charge in the "skill tags" list for your profile, do have invested in you? If not, why should have any say in suppressing the expression of any of your skills? What can be done about skills censorship? And noticing that this issue could easily go beyond the tech world, right?