The brand guidelines specifically allows "for Instagram" though, and funny enough also specifically disallows abbreviating "Instagram". The real issue is that

The brand guidelines specifically allows "for Instagram" though, and funny enough also specifically disallows abbreviating "Instagram". The real issue is that you're not talking to Instagram or people who represent Instagram's interests; you're talking to Google which is looking after Google's interests by being excessively cautious in favour of takedowns to avoid expensive lawsuits and/or additional legislation, and you're talking to some external "brand protection" agency whose interest it is to take down as much as it can to justify its fee. And through these intermediaries neither of whom actually have a stake in the matter, both parties who do have a stake (Instagram and the app developer) both suffer.