An internal service document recently leaked from within Apple states that no-one but company staff and Authorized Apple Service Providers (AASPs) can repair or replace most MacBook 2018 and iMac Pro components without the devices becoming inoperable. However, iFixit has claimed to have done so with a MacBook Pro - and nothing happened.
https://www.notebookcheck.net/Can-you-fix-your-own-2018-MacBook-An-internal-Apple-report-says-no-but-iFixit-says-yes.337262.0.html