I would gladly argue about this, but I’m afraid we both going to stick to our opinions. But I do accept your explanation.
This is not the case to my knowlegd. Even when I request a new software from the IT depatrment it takes days if not weeks after the line manager gave permission. Nobody, at least in the Netherlands where I’m from, is upgrading every year. Believe me, I’ve worked for many engineering companies.
In practice this never ever ever happens. Again, from my experience at least in the Netherlands.
Only not for anything below Revit 2020, you forgot to add… 
I think there’s no need to spam this topic anymore. If anyone want’s to know where to download Dynamo 2.2 and above for Revit 2019, the answer is nowhere.