Why? If the argument is well argued, and makes you have better understanding of the issue, does it teally matter who you argue with? Can you only have your deeply held convictions changed from your own sphere? The implications are a bit disheartening in that case.
Nobody thinks this way about actual strong convictions they held like belief in god or abortion or polygamy.
This works only for very narrow set of topics about numbers and data.
Even the same academics that would change their mind quickly about some theory would never actually change their mind on their strong ideological convictions. I know it from real life examples.
Strange that it needs to be articulated so loud and clear.
So I repeat again if you changed your mind under influence of an internet stranger then it wasn’t a very strong conviction.