R E K@rek@merveilles.town
Apparently doing this can have effects on your emails, such as turning off labels/automatic email filtering" and lumping in your emails together in your main inbox(as opposed to being categorized, apparently this is also a "smart" feature, didnt know that). Also it'll affect Gmail events on your Google Calendar.
So maybe worth studying further before opting out, but honestly the AI features are so freakin' vile, they're a privacy nightmare. In all it ought to be a good kick in the butt to GTF off Gmail.
R E K@rek@merveilles.town
You can learn about what will be affected by opting out using the above settings in detail here:
https://support.google.com/mail/answer/15604322?hl=en&co=GENIE.Platform%3DDesktop#zippy=%2Cwhat-are-googles-legal-bases-of-processing-for-users-in-the-european-economic-area-united-kingdom-or-switzerland%2Chow-long-is-your-workspace-content-activity-used-to-provide-smart-features-and-to-improve-these-features