You can read into the change however you want. The facts are there in black and white, the number of posts over the past few months are virtually non-existent.
The reason for the change is to coax users into posting in the English support forum, instead of the International section where there post might not even get looked at let alone answered. It also leads to less areas that need moderation or are left un-moderated.
The English support section is by far the most frequented, so it makes sense to ensure that if users want support they post there to get an answer to a question.
They are the reasons. Nothing more, nothing less.