[maxmcd]

It seems that "platform" in this instance is referring to some kind of CDN. Some CDNs handle redirects well, but some don't. Cloudflare workers are on the "edge" and this is "edge SEO" (apparently). Most CDNs don't allow the types of modifications present in this blog post.

[howinator]

AAhhh that makes more sense! In that case, edits at the edge do make a lot of sense.