Surely they need to be completely transparent at this point to avoid the Ratners effect? I am certainly never buying SanDisk / Western Digital labelled storage ever again and I will be researching carefully next time I need storage to make sure I don’t buy relabelled stuff.
I currently have SanDisk microSD cards in my DSLR so I will have to think about getting a different manufacturers card in there and saving to both in parallel just in case. I might just bin the sandisk card just to be sure, though. Their name is in the gutter already - do they realise that?