If it tastes better than actual chicken, then you've just created a new meat-like product with a chicken-ish taste.

It's like a Charlie Chaplin look-alike contest where Charlie Chaplin himself ranks sixth. You can say someone looks almost like Charlie Chaplin, but claiming they look more like him than he does himself doesn't make any sense.

No, that is not a similar situation, since Charlie Chaplin is, by definition, a single entity with a single definition.

Chicken meat on the other hand, is a range of flavours and textures. Chicken nuggets feel nothing like roast chicken, which feels nothing like pulled chicken. White meat tastes different then dark meat, the and connective tissues add other flavours as well. Different species of chickens tastes different as do chickens on different diets, and the taste of chicken has changed over time. Hell, American chicken tastes notably worse than chicken in most other countries.

You are not dealing with a single defined thing, especially when dealing with the broad category of everything allowed to be called chicken at the grocery store, like chicken nuggets and burgers. It is entirely possible for a synthetic fake chicken product, to slot into this spectrum of options.