Don’t be ridiculous. Are Elvis impersonators unethical? Is the release of Titanic in 3D unethical? Just take a deep breath and chill the fuck out with your ethics.
Unless Dr. Dre went against the explicit wishes of Tupac’s family, nothing that got projected onto that screen at Coachella comes close to breaching the moral philosophy of gangster rap.
Now, was it in good taste? Fuck no. It was cheap and sentimental, a grandiose but clumsy exercise in nostalgia.
That’s okay, though. Low brow audiences eat that shit up. Panem et circenses. Ecstasy and holograms. History repeats, but hey, are you not entertained?