pm-uninstall doesn't respect module dependencies (at least for D7)

drush pm-uninstall doesn't seem to do dependencies "right" for Drupal 7, or certainly not in the same way as the modules page at admin/modules.

If you use the modules page, you're forced to go through an incredibly painful routine of uninstalling prerequisites and then uninstalling the module at hand. If you use drush uninstall though, it happily uninstalls whatever module you ask, even though this results in a PHP fatal the next thing you do, because some other module needs code from it to uninstall it.

A super-simple way to demonstrate: Install commerce, including commerce_tax and commerce_tax_ui (which depends on commerce_tax). Disable those two. Uninstall commerce_tax. Then uninstall commerce_tax_ui. You get a fatal.

rfay@rfay-bigsony:~/workspace/d7git$ drush uninstall commerce_tax
The following modules will be uninstalled: commerce_tax
Do you really want to continue? (y/n): y
commerce_tax was successfully uninstalled.                           [ok]

rfay@rfay-bigsony:~/workspace/d7git$ drush uninstall -y commerce_tax_ui
The following modules will be uninstalled: commerce_tax_ui
Do you really want to continue? (y/n): y
PHP Fatal error:  Call to undefined function commerce_tax_rates() in /home/rfay/workspace/d7git/sites/all/modules/commerce/modules/tax/commerce_tax_ui.module on line 39
Drush command terminated abnormally due to an unrecoverable error.   [error]
Error: Call to undefined function commerce_tax_rates() in
/home/rfay/workspace/d7git/sites/all/modules/commerce/modules/tax/commerce_tax_ui.module,
line 39

Actually, I'm a bit baffled that commerce_tax_rates() is called in the uninstall for commerce_tax_ui, since there is no hook_uninstall() implemented there.