The article is idiotic. Yes, groups of people (corporations, in the literal sense) have begun to be recognized as having almost as much right to free speech as the individual constituents. No, that might not be perfectly ideal. Yes, at the same time (who can speak as to the causal relationship) the conservative right has embraced the first amendment somewhat more than in the past.
But the real problem is not that the right has embraced 1A, it's that the so-called "liberal" left has abandoned it. The left is no longer liberal in the traditional sense; in fact, these days, it's the left which seeks to impose certain values on society by any means necessary, including the suppression of speech. "Students, prisoners, pacifists and whistle-blowers"---at least two of these, students and whistle-blowers, have been primarily attacked by the leftist university administrations and the current American executive, also on the left. I can't say as to the prisoners and pacifists, except insofar as the prisoners and pacifists are the whistle-blowers, in which case it was again the left which has trampled their first amendment rights.
Those of us who might be liberals in the traditional sense are and should be increasingly disgusted by these trends.