The Seminole tribe hasn't endorsed the use of the chop but they haven't condemned it either. Even if they did endorse the use of the chop they still shouldn't do it, as it's a cartoonish depiction. There were native americans who didn't have a problem with the Washington Redskins but that didn't make the name less problematic.
Also anyone who considers these proposed changes as cancelling are brain damaged doofuses. I'm so glad that the phrases cancelling and cancel culture are being so watered down. An entity choosing to change their bands, slogans, logos, traditions isn't cancelling, they have a choice.