He is saying since 2084 Jan Shatabdi stops at Irugur (new stop introduced) similarly Singanallur should also be made a stop. By the way the distance between Singanallur and Irugur is not much.
If at this rate people ask for stops, then Shatabdi would lose its very meaning.
Irugur has been provided to provide for some bye-pass for another superfast I think at the moment.
There...
more... is talk of Duranto between CBE-MAS and hence this stop for JS may have been provided to allow Duranto thru run.... it's a guess.
Good wishes.