"If you put a LGPL library on RaspberryPi, you can of course put a replacement/upgrade on."
According to the comment I was replying to, this is not possible: "...end users have no access to replace shared libraries in embedded or even mobile devices..."
I would consider the Raspberry Pi to be an embedded device.
You seem to agree that one can replace/upgrade a LGPL library on such a system. Which would usually imply that you also agree with my assessment that the parent comment's theory of it not being possible being false.
So I conclude that neither you nor the parent comment's author consider the Raspberry Pi an embedded device.