Handball literally gave Australia a host quota back in 2000 so they'll give it to anyone.
Field hockey in comparison has been more restrictive. They require the United States to have a world ranking of at least 25, which the women should easily meet and the men are likely to meet.
The rugby sevens qualifiers has a logic hole.
In the past, in order to prevent a weak North American team from qualifying, they stipulate that should two North American nations qualifying through the World Series (basically Canada and the United States) then there won't be a direct qualifier. Here because they have the host quota at a lower priority the way it is written is if the United States finishes in the top 4 (and not Canada) then Canada would be unable to qualify through the continental qualifier.
Of course, I doubt that is true (and this can be easily fixed by putting the host quota as the highest priority) and Canada will be allowed to qualify as normal.
Yeah, it's quite an oversight. I can look past unlikely scenarios, for example what happens if the United States wins the 2026-27 Pro League, but Argentina qualifying through the Women's Pro League and winning gold at the Pan Am Games with the United States finishing second is a very likely scenario, possibly as high as a 50% chance.