This is a quote from the linked article:
Once XRP is listed on more exchanges as a base pair and people can buy directly with Fiat, then we will see less of this BTC influence. Rumors about Binance adding of XRP as base currency is another plus for the decoupling narrative.
The first sentence suggests that the decoupling will take place when enough exchanges list XRP as a base pair. Other alts are already in that position (ETH, LTC) but they are still very much coupled with bitcoin. So I don't think this will have a strong effect.
As for the rumors about Binance adding XRP, they seem to be true, but the exchange asked specifically to be convinced (by XRP supporters or otherwise) why they should be listing it. Let's see if they manage to persuade them.