Drupal 7 to Drupal 9 in an hour, is it possible

Countless blog posts have been written about migrating from Drupal 7 to 8/9/10. 
Some recommend how to begin breaking down this rather overwhelming endeavor into manageable pieces. 
Others provide concrete technical recommendations for very specific Drupal 7 setups.                       

The many hours spent writing up valuable lessons learned and sharing them is a very valuable contribution to the Drupal community! But it still requires many individual Drupal developers to find, read, understand and apply these lessons.

For Drupal sites with big budgets, this is feasible, but for many among the long tail of >350,000 Drupal 7 sites
, it is not. 
Too much technical expertise is required, which is often out of (financial) reach.

What if that could be different? 
What if we could collect all these lessons learned and make them not just available to the Drupal community, but apply them automatically?

Enter: AM:A!

I didn't try it yet but Acquia said that its working, I believe them.

please check out Wim Leers tool, and send me your remarks.