The statement that best assesses the rights available to LGBTQ+ citizens of Saudi Arabia and Vietnam is:
"Members of the LGBTQ+ community in Saudi Arabia have no rights. Vietnam no longer prohibits same-sex relationships but has not updated its laws to protect members of the community."
This accurately reflects the situation, as Saudi Arabia has strict laws against homosexuality, while Vietnam has decriminalized same-sex relationships but does not have comprehensive legal protections for LGBTQ+ individuals.