That's correct, but then nobody claimed that these plugins would, because they are more geared at total image enhancement, not specifically for detailed Retouch like an image pixel oriented editor. For that there are plenty of alternatives. Fortunately, most Raw converters do offer spot removal.
So can we say that DxO Pro 8 and photoFXlab isn't enough as a replacement for LR -- I need some other software to get something like the functionality of the LR Spot Removal Brush?
Is the only viable option with DxO Pro 8 and photoFXlab extract the main subject with ReMask and find an entirely different background? (That might actually work with the current image but won't in other cases.)