You notice that this thread is about a specific use case stated by the OP? It seems like that you ignore that.
Your claim that the new keyboard is not considerably louder can easily be dismissed by looking at the reviews which point out that fact in very clear terms.
What measurements are you basing the "much faster" argument on? I already admitted to 20% by the way. Is that considerably faster? No it is not.
Lateron in your post you say that I am basing my argumentation merely on the SD Card slot, which is not true. You also call the argument about the keyboard nonsense. Tell that to the people who got issues; severe issues with multiple exchanges on a device which is not old at all.
Something missing is just "anecdotal"? The key difference is that in the past, things got replaced by better technologies. With USB-C that is clearly not the case right now. Did you take a look at the ecosystem of USB-C? It is a total mess right now. Adding fuel to that, you have to add money to the initial price of buying the machine just to be able to use it with anything external.
Calling arguments nonsense and only anecdotal does not work in a discussion very well, it only takes it to an almost personal level which is not useful for the OP who wants to make a informed decision.