AMD brought the Navi 24 to the DIY market in the form of the RX 6500 XT and the card was widely criticized by reviewers due to the aforementioned limitations.
So while you may be wondering why an even slower card in the form of the RX 6300 could be a reason for worry, the answer lies in its mobile counterpart, the RX 6300M, which only comes with 2GB of VRAM across a 32-bit memory interface. If AMD decides to go this route for the desktop 6300 too, ie, a
RX 6300 with only 2GB of memory, then once more we could have a repeat of the 6500 XT situation, or potentially worse, when running the card on a PCIe 3.0 or older system. Two gigs of buffer is too low nowadays and textures, among other things, eat it up quickly and that, paired with the low x4 PCIe bandwidth could severely affect the card's performance. Fortunately though, the card is rumored to be an OEM only option which means it may not have to bear the brunt of most reviewers, though it would likely still be a bad card offered by OEMs.