Look, it’s very simple. If you don’t WANT to do a movie about Tarzan, don’t call your movie “Tarzan”. Say it was “inspired by” Tarzan.
Conversely, if you call your movie “Tarzan”, then make it a faithful adaptation of the source material. And since Hollywood has officially run out of people intelligent enough to write an original movie, this applies to EVERY adaptation of EVERYTHING. Make an original story, or make a faithful adaptation. This is just plagiarism.