Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/5134
I also think being more on the cautious side is actually a good thing.
Given how scared and confused many people and companies are with respect to
open source and accidentally infringement of IP, being cautious is good, in my
opinion.
There is an interesting comment from Ted Dunning on a related question,
basically saying that if things could be a problem or not, think if some
cautious/picky users might perceive them as a problem:
https://lists.apache.org/thread.html/fc3992c13cc30f889c820d1cfd6be61b63a5be4efa7c9101262474c9@%3Clegal-discuss.apache.org%3E
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