Thanks for the feedback!
Honestly, Don't worry about it that much. Using Native American headdresses isn't a bad thing. This goes for all cultures through out the world, Feel free to show off and get inspired by traditions. Just don't make fun of others ( which you didn't)
Don't worry about pleasing everyone. Not just in Game Deving but in general, Also taking different inspiration is important! If you are still worried get in touch with people from the culture in question rather than taking feedback from anons. Don't remove art and make your game more boring and lifeless of people getting offended on the behalf of others for no reason.
Someone might be offended that you used eggs, or goblins or the horned helmets ECT.
Keep up the good work!