A disclaimer is a piece of text a person or company writes to avoid responsibility. In the GPL, there's text saying that the program is distributed without any warranty - that's a disclaimer. If someone sues you because the program broke, you can point to the disclaimer to show you never claimed that it would work.
Disclosure is just revealing information.
That parenthesized remark was disclosure (because the author revealed his affiliation with Microsoft) but it was also a disclaimer - because of that text, no one can claim that the author was astroturfing.
A disclaimer is a piece of text a person or company writes to avoid responsibility. In the GPL, there's text saying that the program is distributed without any warranty - that's a disclaimer. If someone sues you because the program broke, you can point to the disclaimer to show you never claimed that it would work.
Disclosure is just revealing information.
That parenthesized remark was disclosure (because the author revealed his affiliation with Microsoft) but it was also a disclaimer - because of that text, no one can claim that the author was astroturfing.