Misleading headline. If you click through, to the pie chart, "broadcast" - which is OTA gets 20.5%. Much higher than the 10.5 % headline.
The 10.5 figure, relates to some streaming services -which on a per service have a much lower viewing statistic. What's interesting about the pie chart graphic is the share for "cable" which is 24%. How much of that might be attributed to current programs on cable channels owned by the OTA networks that have a 2nd run on a delayed basis on a cable channel - like USA network, which would bolster ratings for the programs. I agree with you, OTA viewing shares are plumetting.