Earlier quoted context omitted.
You've got numerous people on this page saying they work better in open offices. Do you have some reason for disbelieving them?
There's a pretty wide gap between "numerous people on this page" and "a significant portion of the population". Given actual productivity studies tend to show a big, big decrease in productivity among workers who have individual or small group offices replaced with open office plans, the "significant portion of the population" claim seems unlikely, since they're apparently not significant enough to move the needle in…
That's not how statistics work. If 60% of people see a 20% decrease in productivity in an open office and 40% see a 20% increase, then: .6 x .8 + .4 x 1.2 = .48 + .48 = .96, so you'd expect to see a 4% decrease in productivity.
In fact, people who work in open offices could even be the majority if the effects have different magnitudes. Let's say 70% of people experience a 10% increase in productivity when working in an open office, while the other 30% experience a 50% decrease. .7 x 1.1 + .3 x .5 = .77 + .15 = .92. So you could see an 8% reduction in productivity in an open office, even if 70% saw an increase in productivity.
You would, of course, see an increase in productivity in both scenarios if you let people work in the office spaces that are appropriate for their needs.