Your EE users use your self-hosted product because they don’t want anything leaving their premises — not a single bit of data. If you require this, do you really think EA, SIEMENS, Ericsson, Lockheed Martin or Bayer are going to let any data from their instances with potentially secret and internal future projects leak out to you or your third parties? No, they won’t. They’ll require you signing a contract that you won’t track them, or they’ll switch vendors — you’re the small fish in that case.
Additionally, I’d suggest reading and understanding the GDPR — the text is actually surprisingly simple:
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...
So you, or in case of the EE Edition, your customers, have to have explicit, clear, and freely given[1] consent to allow any telemetry or tracking which contains PII to happen at all, and especially to give any PII to third parties. Pseudonymous data counts as PII. Data which contains the IP (such as a direct connection to a third-party server to transmit data) counts as PII.
[1] Even more interesting, freely given consent is defined as explicitly opt-in, and it has to be in clear and simple language, the default (and/or the biggest button) has to be rejecting everything, and the consent can not lead to any functional changes, so you can’t require opt-in to let the user access any functionality either.