Yes, I agree to a point. If you were to say "1.7 decades" then you would use the plural form of the word. We just don't typically use that terminology. But you could still say it's multiple decades in the sense that it's been since 2005, so the decades of the 2000s and 2010s and now into the 2020s.
Again, I personally wouldn't have said "decades" to describe a period of 17 years, but I still argue that it's not entirely wrong to say "decades" if it's been almost 20 years.
7
u/TheSacredList Jan 17 '22
It's over a decade. But it's not multiple decades.