Begging the Question.

Step 1: Assume your claim is already true, e.g. "Microsoft is a still good corporate actor in spite of doing X".

Step 2: Manufacture circular logic to support your claim from Step 1.

In other words, the poster is begging the question to be self-evident, rather than producing evidence to support their claim.

It's basically shooting the messenger, which is an ad hominem.

I'm not sure they're quite the same. If noone else has coined a term for it I'll go with the "cancer cure fallacy" but maybe someone has a better name. Open to suggestions!