Forwarding a message that contains these so-called "safe" links is a nightmare.
These so-called "safe" links are a nightmare from a usability standpoint and needlessly obscurew the original link. It is imprtant to have the ability for users to see clearly the original destination of each link so that they can evaluate for themselves the trustworhiness of the oringinal site. (For example, most mail readers have the ability to hover over a URL to see where it actually points and this is disabled by ATP re-rwitten URLs.). Please fix this usability disaster.
Also, primitive mail security scanners might flag such links as suspicious and as a result the mail as spam.
This is fixed in the latest O365 versions. Hovering over a link shows a pop up that lists the original url.