Steve Inskeep, a fellow NPR journalist, published a rebuttal on his own Substack[0] to Uri Berliner's article. Considering that Inskeep's Substack is also for profit (meaning people must pay a subscription to read non-public articles), it seems that unless he is also suspended, there is in fact selective enforcement.
[0]: https://steveinskeep.substack.com/p/how-my-npr-colleague-fai...