Not for me. I started reading manga 9 years ago and at that time there were many WSJ manga which interested me, but except for One Piece all of them are done and gone. And the only "new" manga which i liked from the first chapter and still like is My Hero Academia. The problem with the other newer ones is that they aren't what i look for in WSJ manga, super powered battle shonen.
There are just 4 of these manga left in the magazine which won't go anywhere anytime soon: One Piece, My Hero Academia, Black Clover and Kimetsu no Yaiba. I already said i like One Piece and My Hero Academia, i still read Black Clover but just because there isn't anything else to read, and my enjoyment of Kimetsu no Yaiba took a big dip with the current arc. I doubt there will be any other such manga left to read which i will like as much as One Piece after One Piece is finished, so why continue reading manga? To read the axed manga with less than 20 chapters in the hope that every 4 or 5 years another one i could like appears which doesn't get axed?
And if Shueisha plans a One Piece GT or Super after the manga is finished then i should really stop with anime and manga. What they did to Dragon Ball with Super is fanfic at this point. To imagine that 20 year old drawings of Super Saiyan 5 are as good as canon now makes me fear how the 12 year old drawings of Luffy's Gear 4 could become canon in One Piece Super.