Yes, all of Jungkook's tattoos are understood to be permanent.
While initial speculation surrounded whether Jungkook's numerous tattoos were temporary or permanent, the prevailing consensus and evidence point towards them being permanent fixtures. There has been no reliable information suggesting any removal attempts or that they are anything other than real tattoos.
It's important to note the distinction between temporary and permanent tattoos. Temporary tattoos usually involve the application of designs onto the skin's surface, lasting only a few days to a couple of weeks. In contrast, permanent tattoos involve injecting ink into the dermis layer of the skin, making them a lasting form of body art. All available information regarding Jungkook's tattoos indicate the latter.
Therefore, considering the available information, it is highly likely and accepted that Jungkook's tattoos are indeed permanent.