The NFL's COVID-19 saga continues. Bills wide receiver Isaiah McKenzie was fined $14,650 for not wearing a mask this week. The wide receiver took to Twitter to show the notice the NFL served him. While $14,650 is enough to bankrupt most in the United States, is it enough of a punishment to elicit some change in NFL stars? Isaiah McKenzie fined, but Covid-19 punishments may not be harsh enoughThe notice the NFL gave to McKenzie outlined that he was seen without a mask twice. Essentially, he was fined about $7,000 per occurrence. While this would be a serious punishment for most outside the NFL world, McKenzie is taking the punishment in his stride.On his Twitter account, McKenzie wrote, "They got me! @NFL you win!" The reaction to the punishment was pretty tongue-in-cheek and does not quite portray someone willing to change his behavior. They got me! @NFL you win! pic.twitter.com/Ewt498wmsy— Isaiah McKenzie (@_IsaiahMcKenzie) August 26, 2021If the NFL wants to see its players take the mask mandate seriously, it needs to up the ante. Isaiah McKenzie is expected to make $1.1275 million in 2021. Even as a player with a low-end salary, McKenzie's punishment is less than a slap on the wrist. It essentially amounts to a speeding ticket.Some may change their behavior after a speeding ticket, but others see it as a fee. It is unclear how McKenzie feels about the nature of the fine, but it seems clear that it's not creating much pressure for substantial change.This is a wide receiver on the bottom end of the salary leaderboard. If a $14,650 fine won't change his behavior, it won't force top-end earners to give the rule a second thought. For instance, according to Spotrac, DeAndre Hopkins is expected to make almost $14 million in 2021. A $14,650 fine is only 0.104% of his income for 2021.In other words, if Hopkins wanted to, he could probably go without a mask whenever he wants at this rate. But if the NFL were to multiply the fine by a factor of ten, now that would be something. For McKenzie, a $146,500 fine would pinch, as it would take over ten percent of his yearly income.Arizona Cardinals Off-Season WorkoutThat said, a wide receiver like Hopkins would still be relatively unaffected. Therefore, it would make sense for the NFL to fine players a percentage of their income if they are serious about the mandate. A slap on the wrist isn't a sustainable way to effect change.