The advantage is that DNGs produced by PL appear to be more compact than TIFs, and DXO already supports output to DNG with just optical corrections and denoising (HQ, Prime, DeepPRIME). A workflow via DNGs is the preferred route if multiple images are derived from a raw file. The long process of demosaicking and denoising is performed once, with optical corrections saved to a DNG. From there, a user could continue editing in PL, or invoke external programs accepting DNG. For example Picture Window Pro 8, Microsoft Research ICE, Snapseed … and hopefully Nik collection.