Astra was maybe the best theme a year ago. Among the fast themes if not the fastest one.

Since kadence theme came out, Astra is not the best free theme any more.
With features like global colours and header builder, it shows what astra should have done since day one.

When I start my new project, I consider using Kadence free even though I have the pro version of the Astra.

Hopefully they will add some of those features soon.