The assumption of invidious motive degrades the debate. It is not an effective method to getting closer to a resolution.
When politicians use this method and claim that their opposition hates their country, rather than persuade based on the merits of their position, it irks me just as much.
I imagine the Pepsi doesn't routinely allow Coke employees to offer suggestions during their business meetings.
Like it or not, all forms of money inherently compete with each other.
Someone invested in currency A always has an interest in preventing the complete success of currency B, because a complete win for currency B means a loss for A.