Coughlin's show coincided with the creation of the FCC and they never really tangled. His show was pulled off the network a full 5 years after the FCC was established. FCC regulation may have had a part in that, but there is no reason to believe he in particular was targeted and certainly not that the law was passed to target him.
...the actual page linked doesn't mention Coughlin at all: https://en.wikipedia.org/wiki/Communications_Act_of_1934
[1] The habit of throwing discussion bombs like this from throwaway accounts is another sign of HN's decay.
The FCC was created in 1934, four years earlier. So arguing from this basis that it was created to censor is clearly just plain wrong. The wikipedia narrative on the Coughlin page is basically a lie.
[1] https://firstamendment.mtsu.edu/article/radio-act-of-1912/
How exactly did the FCC exist before him?