The April 2019 timeframe was a critical junction for Windows 7 for several reasons:
Some community builds include universal USB 3.0/3.1 and NVMe drivers, which were not natively supported in the original Windows 7 release but are necessary for modern hardware. Risks and Considerations windows-7-all-in-one-apr-2019
Around April 24, 2019, Microsoft began deploying notifications to Windows 7 users warning them of the upcoming end-of-life date to encourage migration to Windows 10. The April 2019 timeframe was a critical junction
In April 2019, Microsoft began selling ESU plans to organizations, allowing them to receive critical security patches for three years past the 2020 retirement date—though this came at a significant yearly increasing cost. windows-7-all-in-one-apr-2019