In my opinion, the author of the article is either very lazy or has a set agenda, regardless of facts, which we don't hardly know of.
If this section is true, I think App Store policy violations might be the cause of removal for the various parties.
"“We treat all apps the same, including those that compete with our own services,” said Tammy Levine, an Apple spokeswoman. “Our incentive is to have a vibrant app ecosystem that provides consumers access to as many quality apps as possible.” She said Apple removed or required changes to the apps because they could gain too much information from users’ devices. She added that the timing of Apple’s moves was not related to its debut of similar tools.