I think it's a misunderstanding: I was interested in since when supports only centOS and no other OS, not the reason why...
I mean earlier it worked with other opsystems - as softacouls wiki mentions this fact also - and I wonder when was it changed?
Thank you for your answer!
The Ioncube loaders will be enabled by Softaculous itself for CentOS but if you are using any other OS then please follow these two steps to enable Ioncube:
Download the required Ioncube file and rename the file to ioncube.so
Place the file in the following directory
Softaculous will work on cPanel and DirectAdmin on Ubuntu and other OS but it wont work with other Panels. So just to avoid confusion we have stopped support for OS other than CentOS as most of the servers are using CentOS.