However, NFL Network's Ian Rapoport reported the Seahawks didn't postpone the meeting exclusively because Kaepernick declined to stop kneeling. However, the meeting was canceled at the last minute over the constroversial protest.
Kaepernick is not the only player rumored to be facing a blowback for participating in the protest.
A source told the Seattle Times that the Seahawks asked Kaepernick about his plans for the upcoming season and his "off the field activities" and Kaepernick said he didn't know.
According to Adam Schefter, Kaepernick was scheduled to workout for the Seattle Seahawks, but the team postponed the visit after Kaepernick declined to stop kneeling during the national anthem. A possible free-agent deal between Reid and the Bengals reportedly fell apart when the anthem issue was raised.
There could still be a chance that Kaepernick gets his workout with the Seahawks, however.
In 69 regular-season games with the 49ers from 2011 through 2016, Kaepernick threw for 12,271 yards with 72 touchdowns and 30 interceptions. As Sports Illustrated pointed out, free agent safety Eric Reid has also faced questions about whether he would continue kneeling during the national anthem in protest.
Seattle has yet to find a backup quarterback to play behind Russell Wilson and while Kaepernick is still expected to be one of their considerations, the team will look at other potential candidates. Marcus Smith knelt for the anthem in December 2017 and then was re-signed by the team in March 2018.
Long's belief that Kaepernick is being blackballed from the league is not an uncommon train of thought, and it is indeed the subject of Kaepernick's collusion lawsuit, which is continuing this week.