No the fact its still ongoing is what keeps it alive.
I remember very well Narutobase and how active that shit was during manga run. It was so sad to see what it has become couple years after manga ended. With no new releases you just simply come to the point there is nothing left to discuss , no discussion about new chapters , no new theories .
I have been reading one piece for 2 years only, I had enormous pleasure that in 6 months period I bought and read all 103 existing physical manga volumes. Then after couple months , I read it all again. Now I am simply following new chapters each week and buying new manga volumes when they are published ( once in 4 months ).
Waiting whole week/weeks for 12 - 19 pages of content is painful and not much fun compared to reading it all at once .