not display "Install or Install and set as default"

The .info.yml file lists all the theme dependencies.

dependencies:
  - drupal:block
  - drupal:colorbox
  - drupal:comment
  - drupal:commerce
  - drupal:commerce_cart
  - drupal:commerce_checkout
  - drupal:commerce_log
  - drupal:commerce_number_pattern
  - drupal:commerce_order
  - drupal:commerce_price
  - drupal:commerce_product
  - drupal:commerce_promotion
  - drupal:commerce_store
  - drupal:commerce_tax
  - drupal:commerce_wishlist
  - drupal:field
  - drupal:fontawesome
  - drupal:image
  - drupal:node
  - drupal:quicktabs
  - drupal:system
  - drupal:taxonomy
  - drupal:views
  - drupal:views_slideshow_cycle

Are you sure you have those modules installed?

Some of those dependencies use a wrong namespace, since they are not Drupal core modules.

As a side note, there are other bug reports opened for other themes, where a theme installation is tried without first installing the theme's dependencies.
I would suggest to first understand what missing dependencies means, before reporting as bug something that works as expected.