Due to the complete absence of plot details, character descriptions, or any external information, it is not possible to evaluate the portrayal of LGBTQ+ characters or themes in 'Crab, 2022'. Therefore, an assessment cannot be made.

There is currently not enough information available about the film 'Crab, 2022' to determine if transsexual characters or themes are present, or to evaluate their portrayal. Without plot details or character descriptions, an assessment of net impact cannot be made.

The movie does not contain any action or adventure elements.

There is insufficient information regarding the film's characters, plot, or any potential source material to determine if any character was canonically established as one gender and portrayed as another.

The provided details for "Crab, 2022" lack information on characters, source material, or cast. Without these details, it is impossible to determine if any race swaps occurred.