Your petition is worded inaccurately.
Quote from source:"Despite having a visa granted every year and never having a criminal conviction," [ends]
Watson does NOT claim to have no CRIMINAL convictions; He is very careful to state that he has no FELONY convictions.
Quote,"I do not have a single felony conviction on my record from any nation in the world." [ends]
Both the
tourist visa short stay ETA, and the
business visa short stay ETA ask questions regarding criminal convictions. I do not know what type of specific visa the Australians are now requiring, as there are several business visa subtypes, but all application forms I have found ask about criminal convictions.
Another quote from
source,,"...our government has seen fit to tie up the process in an attempt to thwart the Sea Shepherd Conservation Society's attempts to save our whales after requests to do so by the Japanese government." [ends]
If Watson has been improperly entering under a tourist visa, which does not permit one to work, he is hardly being picked on by requiring him to enter Australia under the proper type of visa. You certainly can't claim that the SSCS campaign is a sightseeing voyage; this is what he does for living and he is paid for it.