After reading that article and the above comment I think I'd rather just mix some grape juice and vodka than some of that really cheap wine.
Virtually no wine, no matter how expensive, is just grapes and yeast. All wine you can buy in a store contains at least some additives.
However, the vast majority of wines do contain at least a small amount of added SO2.
There are plenty of expensive wines out there with lots of manipulative additives (sucrose, acidification or deacidification, oak powder, etc) as has been outlined above, but it is much more common in less expensive wine.
There is a scale between wine as a mass produced industrial product and as an artisanal, site-specific hand crafted product, and there are wineries/brands/specific wines that fill in every conceivable spot on that spectrum.
Oftentimes, individual wineries will have different lines of products made in different ways or even in different facilities. Estate grown vs purchased fruit. Physical wineries vs "private labels" made at custom crush facilities. A little tangential perhaps...