The Thunder paid the tax for multiple seasons
Here is a link of every tax paying team from the 14/15 season through the 18/19 season
https://www.hoopsrumors.com/2019/04/recent-history-of-nba-taxpaying-teams.html#:~:text=Recent%20History%20Of%20NBA%20Taxpaying%20Teams%201%202018%2F19,2014%2F15%20Brooklyn%20Nets%20%28%2420MM%29%20Cleveland%20Cavaliers%20%28%247MM%29%202018/19
Oklahoma City Thunder: $61.6MM
Golden State Warriors: $51.5MM
Toronto Raptors: $21.4MM
Portland Trail Blazers: $15.1MM
Boston Celtics: $3.9MM
Total: $153.5MM
Note: This season’s figures are still subject to change, based on postseason-related contract incentives.
2017/18
Cleveland Cavaliers ($50.7MM)
Golden State Warriors ($32.3MM)
Oklahoma City Thunder ($25.4MM)
Washington Wizards ($7MM)
Total: $115.4MM
2016/17
Cleveland Cavaliers ($24.8MM)
Los Angeles Clippers ($3.6MM)
Total: $28.4MM
2015/16
Cleveland Cavaliers ($54MM)
Los Angeles Clippers ($19.9MM)
Golden State Warriors ($14.8MM)
Oklahoma City Thunder ($14.5MM)
Houston Rockets ($4.9MM)
San Antonio Spurs ($4.9MM)
Chicago Bulls ($4.2MM)
Total: $117.2MM
2014/15
Brooklyn Nets ($20MM)
Cleveland Cavaliers ($7MM)
New York Knicks ($6.9MM)
Los Angeles Clippers ($4.8MM)
Oklahoma City Thunder ($2.8MM)
Total: $41.5MM
So that is a 5 year period here are the total number of years teams paid the tax during that stretch
Cleveland - 4
Golden State - 3
Oklahoma City - 3
LA Clippers - 3
New York - 1
Brooklyn - 1
Chicago - 1
San Antonio - 1
Houston - 1
Washington - 1
Boston - 1
Portland - 1
Toronto - 1
Now that obviously doesn't have the last 3 years or this year (or prior to that), but I do think it is fairly informative. The simple reality is most teams avoid the tax at all costs and those that pay it don't tend to pay it very long. Really the Warriors are the only exception as they have been in the tax for years and are paying massive amounts because of it. How long they continue to do that is also up for debate.