Spotify uses DMCA to takedown spotify-dogfood (in error)

I believe this DMCA takedown notice is in error and would like to contest it.

(a) Spotify does not hold copyright on the open-source modifications that are posted in that repo. Those instructions are work-product of linuxctl and he holds copyright on them.

(b) The posted instructions are not a copyright protection circumvention mechanism. Spotify does not need to provide an ad-supported freemium plan; they choose to do so to prime their funnel. Removing the ads does not circumvent any copyright prevention mechanism.