...apparently they are all kind of wonderful.
Yes they are. They could have sold the business to someone else and made some good money, but they chose not to do so because the blends would have either gone downhill or changed. The McNeils were very exacting in the way that they created their blends, some of which involved a number of processes, all carefully monitored. These blends were the product of their personal passion. There's no way to sell that passion to anyone else.
Add to that changes in the tobacco growing market, changes in picking, from each leaf hand picked at just the right stage of maturity to machine harvesting which is cheaper, but which also doesn't produce the same uniform quality.
So sell to who? Someone who won't have access to the same leaf the McNeils used? Someone who doesn't have the depth of expertise that the McNeils developed over decades? Yeah, sure, you'd have the tins, labels, and name, but you wouldn't have the contents. So what, exactly, would be the point?
People who blame the McNeils for not selling are living in a magical reality borne of being truly clueless about what is involved in making blends. They seem to think anyone can do it, and do it the same as anyone else.
The McNeils valued what they did beyond price. So they retired and left behind the legacy of what they had produced.
So, yeah, they are all kind of wonderful.