A technology platform is the foundation for building and running business applications. The platform allows users to run their applications smoothly without worrying about the technology that supports them. At the same time, it allows technical staff to rapidly extend, enhance, or upgrade application software, increasing the speed of business.
https://www.sap.com/canada/products/technology-platform/what-is-a-technology-platform.html
Pixelfed is definitely a platform . You only heard the term in context of centralized big social media so you think the term has bad connotation
Please, don’t assume things about the people on the other side of a debate. It’s condescending and it robs us all of learning.
I’m not saying that we don’t need platforms because of “bad connotation”. I’m saying it because I have worked on a “social browser” for the fediverse, an application server for using activitypub as a transport mechanism and I know that we can develop an open social web that does not rely on server-centric applications.