It is not. It is better than bloated Google Android but not "great".

• They use tracking ids for updates
• They are far behind with updates lowering security and thus risking privacy
• They use testing keys which is ridicolous
• They added OpenAI integration and called it "Murena Voice to Text" so that unfiliar users could unintentially leak sensitive data
• They ignore valid critique and call it 'personal harassment' although nothing personal nor something like harassment happen there (for example in related /e/OS threads)