Is Mojang account deleted after migration?

Minecraft account migration last date is next week

Account migration last call

Mandatory MC Account Migration, Page 3

After 6 years of playing my >100$ account Is deleted because I

Java Account Migration: A Fun Announcement by Dinnerbone

Migration failed and potential phishing - Java Edition Support

Over 1800 Minecraft account details posted on the web - Security - iTnews

How to Migrate Your Account from Mojang to Microsoft

Mojang Studios begins its mandatory Microsoft Account requirement

Minecraft's last call to migrate: How not to lose your account