Yep, could well be likely to invoke the Streisand effect.
Seems like a very strange move by Toshiba Australia. I don't understand it.
Toshiba is one of my preferred laptop brands - because of the usually excellent ergonomic design.
I currently support 2 x Toshiba laptops, 3 x DELL laptops, 2 x Asus laptops, and 1 x HP laptop. As I usually try to at least initially service them myself, it goes without saying that I will always need free and ready access to any necessary documentation - especially after warranty has expired.
If this recent move meant that I could not have that free and ready access to Toshiba documentation, then I would probably be unlikely to buy any more Toshiba laptops or recommend them for that reason.