Only the eligibility to deduct the traditional IRA contribution gets phased out. Even if MAGI is above the applicable threshold, you can still make a traditional IRA contribution provided you have the supporting compensation, it just won't be deductible.
Except for the dollar amounts of the thresholds, the limitations on being able to deduct a traditional IRA contribution if you or your spouse are covered by a workplace retirement plan have remained unchanged since 1987. The "What's New for 2021" information is simply telling you that the thresholds for 2021 have increased slightly from those for 2020.
