if they haven’t defined it, then legally it is meant in the broadest sense, isn’t it?

Just did a cursory search for harm on the YouTube ToS. There is no definition that I saw, but it does say “may cause harm”. So my suspicion that anything could be construed to be harmful to YouTube’s business is likely correct. Quoted sections of the YouTube ToS containing the word “harm” as of 2025-06-06 17:20 GMT.

Removal of Content By YouTube

If any of your Content (1) is in breach of this Agreement or (2) may cause harm to YouTube, our users, or third parties, we reserve the right to remove or take down some or all of such Content in our discretion. We will notify you with the reason for our action unless we reasonably believe that to do so: (a) would breach the law or the direction of a legal enforcement authority or would otherwise risk legal liability for YouTube or our Affiliates; (b) would compromise an investigation or the integrity or operation of the Service; or © would cause harm to any user, other third party, YouTube or our Affiliates. You can learn more about reporting and enforcement, including how to appeal on the Troubleshooting page of our Help Center.

Terminations and Suspensions by YouTube

YouTube reserves the right to suspend or terminate your Google account or your access to all or part of the Service if (a) you materially or repeatedly breach this Agreement; (b) we are required to do so to comply with a legal requirement or a court order; or © we reasonably believe that there has been conduct that creates (or could create) liability or harm to any user, other third party, YouTube or our Affiliates.

Notice for Termination or Suspension

We will notify you with the reason for termination or suspension by YouTube unless we reasonably believe that to do so: (a) would violate the law or the direction of a legal enforcement authority; (b) would compromise an investigation; © would compromise the integrity, operation or security of the Service; or (d) would cause harm to any user, other third party, YouTube or our Affiliates.

About this Agreement

Changing this Agreement We may change this Agreement, for example, (1) to reflect changes to our Service or how we do business - for example, when we add new products or features or remove old ones, (2) for legal, regulatory, or security reasons, or (3) to prevent abuse or harm.

If we materially change this Agreement, we’ll provide you with reasonable advance notice and the opportunity to review the changes, except (1) when we launch a new product or feature, or (2) in urgent situations, such as preventing ongoing abuse or responding to legal requirements. If you don’t agree to the new terms, you should remove any Content you uploaded and stop using the Service.