Especially for people who are not (yet) particularly invested/interested, it signals that the "fake" ones are flawed and objectively worse in terms of quality, because of the parallel to fake (counterfeit) goods which often are.
Instead of fake, calling them synthetic or artificial would be more neutral choices. For "real" you could use "natural(ly occurring)" or similar.
Especially for people who are not (yet) particularly invested/interested, it signals that the "fake" ones are flawed and objectively worse in terms of quality, because of the parallel to fake (counterfeit) goods which often are.
Instead of fake, calling them synthetic or artificial would be more neutral choices. For "real" you could use "natural(ly occurring)" or similar.