Netflix’s “Tiger King” will be remembered for getting many of us through a few hours of what seems like eternal quarantine. It hits all the points that make for good television: dynamic characters and fascinating plotlines that include murder, mystery, and, of course, tigers. Lots and lots of tigers. But what it offers in daytime-television-worthy cliffhangers, it misses in addressing the issues with animals in captivity. And that may make its most lasting memory turn out to be an abject failure for animals.