This is an interesting article undermined by a shameless clickbait title.
Just adding a "supposedly" would go a long way, even though it is not clear people suppose it.
The article admits there is no evidence Nintendo copied XaviXport:<p>> With such inconsistent and incomplete information available, none of the above is anything but idle speculation, but the likeliest scenario is that these were simply two different consoles, using broadly similar technology, in development at roughly the same time.<p>> This becomes even more likely to be the case when you consider other technology that had been in development since the turn of the century, such as the GameTrak; this was a third party peripheral, initially for the PS2 (then XBox and PC), which launched in 2004. Its sole launch game, a third person fighting game titled Dark Wind, was in development in 2003, and though motion controlled GameTrak title Real World Golf wasn’t released until 2005, it was announced in 2004, and would almost certainly have been in development well in advance of the XaviXport’s release.