This particular attack probably had nothing to do with any of this, but she could probably be described as offensive from the economic equality standpoint, because she is a billionaire, from the environmental justice standpoint, because she is a frequent private-jet user, and from the music scene standpoint, because she seemingly intentionally pushes out other female artists from billboard spots by re-releasing albums in specific locations/time periods during which her peers are releasing their albums.
Hackers acting as if they’re doing a public service by bringing down a free publicly accessible tool is a new level of assbackwardness.
If the goal really was to force IA to increase their security, they would’ve tried to consult with them. This is more about notoriety and chaos and the hackers have no moral ground to stand on.