Re: Love issue
While I agree with the sentiment there, and he should marry someone he likes as it will be his life, there are other things to think about as well. If his parents are really against it and it is going to be a joint family system, that would probably make things tough for his potential wife.
I don’t think she would be too keen on entering a household where she was not welcome, and thus that is why she wants his parents to agree and then come to her house for an official proposal.
Unfortunately what is right or what makes someone happy does not always mesh well with reality.