So where do you stop?
When FB has messaging in the built in app was the whole of FB a competitor to iMessage?
Is Microsoft Teams a competitor to iMessage as well? Is any application that has the ability to send a message to someone else suddenly a competitor to iMessage and all the other messaging apps?
Not to mention, NO ONE CAN COMPETE with WeChat anyway because its user base is in China where many western countries cannot operate effectively at all. So bringing in WeChat is on many levels, pretty irrelevant.
But if you want to win the award for pointing out something that maybe true but has no real bearing on the discussion... well, be my guest!
There is a term for what you are doing, its called moving the goalposts. You keep changing your argument to avoid simply admitting you were wrong. Its that simple.