I may be wrong here, but I see in your responses a pattern of needing to share your opinion on everything, and needing to be right as well. Let me offer you some words you could use in response to things a person tells you over text:
tell me more
what's that like?
This gives the other person a chance to feel like they ...
How do I let this person know that I find these kinds of replies unhelpful?
Telling someone their feedback isn't helpful is by itself not helpful either. Unless this person is intentionally giving you bad advice (which I doubt based on the comments they made), it'd be more effective to help steer their feedback.
Something along the lines of:
I was looking ...
There really is no single answer to this. Sometimes, there is no need for "response time" at all. You want a blank form or the list they keep of whatevers, they just immediately hit reply and give you the thing. Explaining why you need it right away is not needed in this case and could even be seen as rude.
If your situation is unusual, you should explain ...
Reading your conversation, there is a small thing that sticks out for me, even though you don't seem to focus on that. B says
Hmm, I can say you have your own thoughts, but it’s quite unbearable for me. I mean, as a friend, I'm willing to listen to you talking or ranting or just giving out your opinions in stuff.
and later you say
I hope you do know ...
Do a peer review. Let person1 give their files for checking to person2. Person2 gives it to person3 and so on. Before the peer review, the group leader informs everyone of the rules and consequences. Once everyone is satisfied with the files, the leader submits it. You don't even have to meet. It can be done online.
Btw, a reality of all group projects is ...