There should be cause for celebration among the NextGen TV (ATSC 3.0) camp, if headlines are to be taken at face value. Nexstar Media Group, one of the largest TV station owners in the US, has completed the transition to ATSC 3.0 in Cleveland—ticking off the last top-25 designated market area (DMA) without an ATSC 3.0 lighthouse deployment. A caveat—and clearly one reason behind the lack of fanfare about the milestone—is that upgrading the last major US market is not the same as saying the ATSC 3.0 roll-out is nearing completion, nor is it a genuine inflection point for the hybrid broadcast-broadband standard. So, while NextGen TV is now available across all top-25 DMAs, there are more than 200 DMAs across the US. Plenty of smaller…