Many devs were unwilling to commit (any) dev time to porting existing Qt based applications for the N9 for a number of reasons, the N9 Stillbirth being one of them. Issues with the Nokia SDK build machine, the absolute SHITE state of the nokia app store and hopeless distribution system, not to mention the wait for payments.....
Add to that, a complete lack of advertising for the platform and absolutely NO incentives by Nokia, and there's why.

It's not a matter of hate for ACL (a few purists excluded) but genuine interest and concern for the means of integration with the core OS and UX, which are all valid.

ACL (like Android Player for BB10) is another tool and provides a little bit of leverage for any fence sitters who may be holding back on purchasing because they can't publicly distribute a photo of some stirfry they bought from a street vendor in Bangkok.....