Replacing your hard drive by a larger one, duplicate partitions and then resize them is very common in the windows end user world, including with root partition (eg replace by a ssd, or a larger ssd). There are lots of paid tools to help do that, notably the duplicate part.
Now personnaly I find it weird, I would rather use the excuse to wipe and start clean if root, and for non root just making the partition you want and copy the content instead feels cleaner, but is it fairly common nonetheless.
They indeed don't know the concept of partitions, but they google "replace my hard drive by a larger one" and follow a guide usually (and such guide contains link to a specific duplicate took they can buy, of course).
Now personnaly I find it weird, I would rather use the excuse to wipe and start clean if root, and for non root just making the partition you want and copy the content instead feels cleaner, but is it fairly common nonetheless.
They indeed don't know the concept of partitions, but they google "replace my hard drive by a larger one" and follow a guide usually (and such guide contains link to a specific duplicate took they can buy, of course).