Yes I'm sure some cells would die, specially in the test these guys did in that 1941 experiment. They stuck yeasts in a test tube with water and glucose, alongside a pretty low pH (although not out of the norm). They then fermented the mixtures at high temperatures as well, typically 30°C (and also tested at 35°C). You'll notice that the strains that performed badly were not S. Cerevisiae (the primary yeast we use for fermentation), and S. Cerevisiae actually performed remarkably well (well, most of them).
To boot, they only fermented for 24 hours, and the one strain consumed ~98% of the sugars during this time, before the test. My opinion is that they didn't give the yeast enough time, and it would have probably fermented past their measured ~11.5% ABV if they let it.
Finally, my opinion on the article: It's helpful, it surely is. To me it bears repeating with a more valid dataset though, namely:
1. Using modern yeasts. The yeast strains they mention are not really known to us in this day and age, and
2. Without abusing the yeast in the tests. Adding a yeast suspension to a glucose solution, with no additional nutrients for the yeast cells to consume, and then fermenting it WAY above the recommended temperature is not a consistent, fair or accurate test (in my eyes), and
3. With measuring the pH of the solution after fermentation. Fermenation drops the pH of a solution lower, due to several factors. Prior to fermentation they dropped the pH almost to the low limit that yeast likes. Yeast likes to ferment between 4.0 and 6.0 on the pH scale and I'm willing to bet money that if you adjust a sugar wash's pH to 4.3 BEFORE fermentation, you're going to go below it for sure during the fermentation. Sugar washes breach 4.0 on their own, without adjustment, on a regular basis (which is why we use sea shells or chemicals to keep the pH from crashing during the fermentation).
We don't ferment wine musts or sugar washes without nutrients for the yeast, because we know we end up with stalled ferments, where the yeast konks out waaaay before the end of fermentation, often at stupidly low numbers. These guys perhaps didn't know much better, but they set the yeast off on the back foot, and then abused them down the line, and made (and wrote) a scientific paper with the results. I don't think we should take it for what it is on a homebrew scale to begin with, and considering the article didn't once mention that the yeast cells die (I only ever saw mentioning of "fermentation stopping", not "yeast cells dying"), I don't think we should advocate that the alcohol will kill the yeast.
Because I'm still not of the opinion that it does. And yes, I've done step-feeding on yeast before in a mead, and it got to 19% ABV (from what I could calculate) before fermentation stopped. I cold crashed the mead and stood it aside to fine. One jar was sealed and stored in the pantry for almost 2 years, before the mead was consumed (it was stupidly sweet and incredibly nice to drink, by the way, like sherry or port).
At the bottom of the jar was a thin layer of sediment. I added some water and honey, and while the resulting fermentation was filled with flaws - it fermented. Yeast did not die.