Thank you for the correction; I'm not familiar with the project and just went off how the article described it. > Although the page says that the project's use

Thank you for the correction; I'm not familiar with the project and just went off how the article described it. > Although the page says that the project's use of GPLv3 is "designed for you to use Isotope to build open source and personal projects", it does not say that Isotope cannot be used for commercial projects under GPLv3. Yeah, it's unfortunate they misrepresented the GPL and I wonder if that is how the author became confused.