I wrote a blog post that reflects my own thoughts on how I personally view Backdrop CMS as part of the larger community and a service to those being left behind by Drupal 9+. 

I like Drupal 9 in some situations and for some client and still consider myself part of the Drupal community. I wish there were some way for the Drupal community to acknowledge that Backdrop CMS might meet the needs of some Drupal 7 users and that adopting Backdrop CMS is not abandoning Drupal, it's just a small fork in the road. 

Backdrop CMS - Providing a Soft Landing for Drupal 7 Sites

I'd love feedback.