You are wrong and trying to confuse the people that read this thread.
No. You are wrong and are just blatantly lying to people.
We stopped our watches for 1 second on December 31, 2016 to give time for the earth to come in position!
Yes, to bring it in sync.
My math is correct
No it isn't.
Let me put it in a way that you can understand, a day has 24 hours - Yes
1 hour has 60 minutes and 1 minute has 60 seconds
therefore a day has 86,400 seconds.
If we add 1 second, that means that the day has 86,401 seconds instead of 86,400 seconds.
That means that the earth needed more time to make 1 revolution.
No it didn't. It means it was making slightly less than 1 revolution per day and that had accumulated to an extra second.
It doesn't mean Earth is slowing down.
A graph of the years past from 1972 and the number of leap seconds added
Perhaps you would prefer this graph, by way of a google drive spreadsheet:
https://docs.google.com/spreadsheets/d/1_sFabNEpyH-rOUC93v7XiKGj2zkYELq-eaPpihxru4A/edit?usp=sharingAnd some images for those who just want them:

Notice how instead of just looking at number of leap years added, it looks at the average length of the day for that year (and for a 10 year period)?
Notice how it shows fluctuations in the length of the year?
Notice how now a linear trend shows the length of day (not leap seconds added) is decreasing?
If the number of leap seconds added was perfectly (well, slightly off perfect due to leap years) linear with the year, then it would indicate the length of the day is constant.
Perhaps this will make it easier to understand:
Each day is 86400 seconds. So a year is 31536000 seconds.
If they add a leap second, that means the year is 31536001 seconds, and thus the length of the day on average is 86400.0027 seconds.
If it was a leap year then it would get an extra day, so the year would be 31622400 s normally, or 31622401 s for a leap second, and the leap second makes the average length of the day 86400.0027 s (there isn't enough sig figs to show the difference between this and a normal year).
That means the average length of a day in 2016, when they added a leap year was 86400.0027 seconds.
This also means the average length of a day in 2973 when they added a leap second was 86400.0027.
Notice how these are the same?
Now consider an alternative:
In 1973, they add a single leap second, making the year 31536001 seconds, and thus the length of the day on average is 86400.0027 seconds.
Then in 2016, they added 27 leap seconds (that year, so the clock would go 59, 60, 61, 62 ... 86, 00, making the year a total of 31622427 s, and thus the day an average of
86400.074 s.
Notice how now this is actually longer?
So notice how we haven't gained 27 s from those 27 leap seconds?
Notice how to actually get those 27 extra seconds for a year you would need to add 27 leap seconds in that year?
Notice how that would mean rather than a linear increase in the total number of leap seconds you would need an exponential increase in the total number of leap seconds to indicate what you want?
Going to admit you were wrong yet?
If not, are you at least going to respond to this rationally, addressing the issues raised?
If not, can you just leave the thread rather than continuing to spout the same refuted nonsense?