Hi @Polly Kummel,
I'm afraid there is currently no interface for users to disable the track change cards. You can share your idea about this feature via this portal: https://feedbackportal.microsoft.com/feedback/forum/fb6d67e3-301c-ec11-b6e7-0022481f8472 or upvote similar feedback like this: https://feedbackportal.microsoft.com/feedback/idea/2e04ac16-e9f0-ed11-a81c-000d3a7a48db. Product team would take your feedback into consideration and make improvements in the feature.
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