An example of unskillful means is the denial of conventional rebirth and the fruits of karma.
Is liberation possible for those practicing unskillful means?
This sutta basically says that if a person rejects rebirth then he is going to a bad rebirth.
A1. "Now, householders, of those contemplatives & brahmans who hold
this doctrine, hold this view —...
Denying rebirth view while clinging to self view is wrong view, because this is annihilationism and brings the unenlightened to hedonism.
Denying rebirth view after discarding self view is the noble right view.
Rebirth view can be used as skillful means (upaya) to remove the habit of misconduct, cultivate virtue and generate the path to liberation. ...
What you call "conventional right view" is just skillful means to help one adopt a skillful or wholesome mindset. It's just a helpful tool. The following is an example.
“This noble disciple reflects thus: ‘I am not the only one who is the
owner of one’s kamma, the heir of one’s kamma; who has kamma as one’s
origin, kamma as one’s relative, kamma ...
There are several times in the Sutta where Sariputta or Ananda would say wrong things and be corrected.
Once when Ananda said that this Dhamma is clear as clear can be and Buddha told him not to say that because the Dhamma that is taught is difficult to see as is dependent origination.
Another occasion was when Sariputta said that the Buddha Gotama was ...
no, liberation and right view occur simultaneously the way access concentration/shamata occurs along with the cessation of desire for sense objects ie. food and sex
worth noting that incomplete right view is different than wrong view. wrong view is complete detachment from reality and instead operating within an illusion of knowledge that it is mistaken ...