Is the use of "that" in the sentence below a relative pronoun? It does stand in place of the noun ('view'), but I'm not sure if this is a relative pronoun. Can someone please explain? Thank you.
It is my view that we should legalize abortion.
It is my view [that we should legalize abortion].
No, "that" is never a pronoun when it introduces subordinate relative and content clauses, but a subordinator.
In any case, "that" is not anaphorically linked to "view", so the bracketed constituent is not a relative clause, but a declarative content clause functioning as complement of "view".
It is usually analysed as a complementizer, which packages up the sentence "we should legalize abortion" as a noun phrase.
This is easier to see with a context where a noun phrase is normal, eg as the object of a verb:
I argued that we should legalize abortion.
It's a bit harder to see the role that the NP is playing in this case: in my view it is a complement of "view": "which view? The view that we should legalize abortion".