The black QB push is something I have watched pretty closely since Vick came into the league. It seems to come in waves - the initial was Vick, Culpepper, McNabb and Aaron Brooks. From there more mediocre QBs like Leftwich, Garrard, Campbell, Duhmarcus and then Scam, Toucan, Gremlin, Wilson EJ Manuel, Geno Smiff, Idler Arm (6th rounder) all came into the league within a short time of each other. The most recent wave is Sewerwater, Jameez, Mariota, Deshaun, Deshone (not going to forget his historically bad year), Brissett, Eraserhead and Mahomes. Their has also been an uptick in the UDFA black quarterbacks littering rosters. QBs that do not have the requisite arm strength or accuracy to threaten more than half the field. Alot of these QBs have ranged from very bad to average. I thought after the 2012 season the league was going to go all in on the black quarterbacks but the league corrected itself in terms of defending the zone read and that killed the careers of the Toucan and Gremlin. Scam had his one good MVP season but as a passing QB has been underwhelming. I'd argue Mariota is also struggling after early success. Watson is a turnover machine, Brissett is somehow hyped up, Deshone got a second chance in Green Bay but let's hope they correct that mistake and Jameez is an average to at times above average QB (no real difference between him and Ryan Fitzpatrick to be honest). Mahomes (punchable face and all) is probably the most competent of the quotas and will replace Russell Wilson as the token black QB of the NFL. Undoubtedly Lamar Jackson is going to get hype and alot of built in excuses - the NFL, weenie analysts and DWFs all want him to succeed. He won't though because he can't throw. The hype behind the Ohio St. black quarterback is growing - have yet to hear any criticism around him even though he has played in a very qb friendly system at Ohio St that has produced two NFL non-factors - Cardale Jones (who all the experts had pegged as a surefire first rounder after a 4 game run) and JT Barrett.
You will also continue to see black QBs get compared favorably to white QBs - this is a trend I have noticed in the past 4-5 years. However no white player will be compared to a good black player.
Don has called this the golden age of QBs which it certainly is. I do feel that the league has become way too pass happy and the rules have essentially allowed for what baseball termed the juiced ball. They want points on the board at the expense of defense. We are seeing alot of great QBs with only single digits left in terms of seasons to play - Brady and Brees could both be gone in a year or two. The media is pushing Eli Manning out this year. Big Ben and Rivers both remain elite but are well in their 30s. Flacco is going to be jettisoned at some point for a black quarterback. Ryan and Rodgers probably have a good 5 seasons left in them.