From the article you link:
"Originally billed as a fully enclosed venue with a capacity of 25,000, design changes were necessitated by the relatively small footprint the stadium occupies at Buzzard Point. The presence of an adjacent Pepco facility has required an easement under the stadium to allow the power company access to subterranean wires, forcing the venue’s entire east grandstand to be erected above and around it.
The most obvious design change was the loss of that striking full roof, replaced by a pair of far smaller overhangs that extend over the east and west grandstands.
That’s created an unforeseen issue, one flagged by three sources familiar with the situation, which could inhibit Audi Field’s ability to host big, nationally televised events like U.S. national team games.
'The sun points directly into the cameras,' said one source, who went on to suggest that it will be difficult to broadcast evening games for most of the summer due to the position of the sun."
That's exactly what I said except in more words, but, go with the narrative.