It makes sense, just read the description and read the readme at GitHub. Covers more CDNs than Decentraleyes. Haven't tried, but I suspect it's possible to add more CDNs by export+edit+import.

What this add-on wants to do doesn't make much sense with the naming "Decentraleyes". It's misleading because the general goal of this add-on is very different to the original Decentraleyes. Should've named it to something like CDN speed booster, CDN cache protector, or etc.