An RSS feed is such a simple plain text file. I can't imagine using a dedicated solution for it.
If I needed a dedicated RSS Feed, I would be inclined to generate it with CRON job, and Jinja2 file, and about 3 lines of Python code.
What I typically do use is an extension for my current static site generator. At the moment, that's EleventyJS. But I'm only using that to create RSS because it's already creating the rest of my website.