Prefer local libraries (instead of CDN) [GDPR]

In the GDPR text (Regulation (EU) 2016/679), there is no explicit mention of "not using CDN." The GDPR only establishes principles for processing personal data.
The issue with CDN is that it may lead to the transmission of personal data (such as IP addresses) to third parties outside the EU. This may not be true because CDNs usually have servers close to where you access, so most CDNs have servers in Europe. CDNs mainly operate through caching in the browser; if you have already browsed a another site that uses this CDN, then the browser will not load it again, which helps load the site faster, so I definitely will not fix this issue.

This may not be true

isn't a good legal term... 😂 And there doesn't need to be any explicit mentioning
Where are the sources that can be shown at court to let them know that it's totally fine?

Furthermore, there might be good other reasons for local libraries, for example if you use Drupal in an Intranet.

So, would you be fine with it, if we implemented the functionality?