Kumerow is a perfect example of the NFL's systemic exclusion of White outside receivers. White outside receivers threaten the Caste System's core narrative, much like White running backs and cornerbacks. There's been so many like Kumerow since I began closely following the league's Caste System. It's a real tragedy as many would have been stars, just as Jordy was. Even on Green Bay, Jeff Janis preceded Kumerow as an athletic White outside receiver who was ignored for years before fading from the league (even though he produced on the rare occasions he played).
There has been the very rare blip, such as when Jordy Nelson, Eric Decker and Brian Hartline were all starting outside -- and all putting up thousand yard seasons -- but as has always been the case when "too many" White receivers start doing well, it was squelched. Whereas when some Black QBs finally started doing well it only greatly increased the recruiting and playing opportunities for them, White "outliers" result in the opposite effect, at receiver, running back (McCaffrey), defensive end (J. J. Watt), linebacker (Kuechly and others), safety (Weddle, Smith and others), and cornerback (Sehorn what seems like a century ago). It's undoubtedly a factor in the way Andy Isabella has been used, or more accurately, hasn't been used.
For Kumerow to be 29 and still screwed every year is outrageous. Even being a cousin of the Bosas hasn't helped his cause. His tenacity and determination is admirable and we can only hope that Buffalo will give him the chance the Packers and Bengals didn't. Other than Stefon Diggs the Bills have little at outside receiver, though Gabriel Davis flashed some ability last year as a rookie. But experience has taught that it'll be a huge upset if Kumerow does finally get that chance.