Additional clarification:
No one lost a verification badge today–If you received an email that your channel will no longer be verified, this was just an advanced notice & you can appeal
The checkmark has never appeared on YouTube mobile channel pages (this will be added soon)https://twitter.com/TeamYouTube/status/1174735005215420416 …
More like uh oh we're being ratioed time to make this change because we still want you to think creators matter. Also you unverified yourself so saying that no one lost the checkmark is a bad lie