Calm down buddy, nobody called you a sovereign citizen. The comment above yours is just saying that trying to renounce citizenship but not being able to emigrate (since nobody else wants us) would leave only the option of sovereign citizenship, which obviously doesn’t really work or solve anything.
Stop looking for something to feel offended about and read properly.
Well apple in french is “pomme” so “pomme grenade” is kind of the literal translation - not sure if the English word actually comes from this