Kinda ironic that you actually give your opinion about a conversation after bashing on opinion based discussions.
C'mon, you can't actually tell the difference? Talk all you want whether own trading platform is needed or should service be used. But comparing pros and cons of different service vs another is not productive, as the real discussion should be about whether to do it in a first place or not. You are picking a color for a car you want to get bought, while your dad have already decided to build it him self.
This discussion has ended.
You can't discuss whether or not to build your own version of something without looking at the pros and cons of the alternatives already available. The two discussions heavily overlap.
Until you're appointed a moderator you lack the ability to determine that a discussion has ended just because you want the last word in it.