This seems to suggest "not really": https://www.macrotrends.net/stocks/charts/NYT/new-york-times...
That chart suggested that the times revenue has seen YOY increases every year since 2016.
Also, it really depends on your definition of success.
https://www.statista.com/chart/3755/digital-subscribers-of-t...
(of course, take this as you will: https://www.nytimes.com/2019/02/06/business/media/new-york-t...)