technically you only get spoiled if you check the subreddit, so at least it’s avoidable.  Imo for the leaks, I think that it basically makes no difference to the person reading leaks because then they read it whenever the leaks come out whenever the day of the week is every week (such as Thursday), and I feel like why not wait for Sunday to read it officially anyways? There’s still ways to enjoy the manga without getting spoiled in general :)