Seeking clarification about SMF licensing and plugin licensing

[Glyph]

edit;
I guess I should have read closer:

Simple Machines software is not only free but also Open Source. Simple Machines project teams will release their software under OSI approved Open Source licenses. Though future project teams may choose from other OSI approved Open Source licenses, the "standard" license for Simple Machines software is the New BSD (3-clause) license. This means that anyone is free to modify and improve the source code as they see fit. And they may redistribute their modified code, as long as they follow these three guidelines: