When exporting a file from Indesign instead of using the Transparency Flattner Presets and then start changing things on the PDF export popup, I suggest to add a checkmark on the PDF export popup - Convert all texts to outlines.

Itll make it more easy to all of the users, Iam working with Indesign for more than 10 years, each time I installed anew version of Indesign i needed to configure it again and each time I didn't understand why didn't you add this option.

Thanks,
Idan