I'm not one to keep a player in my lineup if he's on a bye. However, I have fielded teams where I opted to not fill a spot with a player. I didn't forget to fill the spot, but chose not to do so. I think if you're going to be a "busybody" monitoring everyone's lineup, you should probably only worry about yourself. There is a difference between someone quitting a league mid-season, never changing their lineup week to week, and an active owner who has strategically decided not to fill a complete lineup. As the "busybody", you trying to tell me what's best for my team has no insight into my thoughts/opinions. It's unwarranted, and honestly I'd tell you to go pound sand. You don't know my reasoning or what I'm trying to accomplish.
For reference, my money league has a very short bench - 3 players. It doesn't leave much room for WW claims or backups. This league has been in place for over 12 years. It was designed to force in-season strategy. We pick up new players each year, mainly because some managers move on. It started as a work league, and after many of us moved on to greener pastures, we've kept it running over the years. With the short bench, you have to decide if you're willing to give up a player to fill a bye week, knowing you likely won't get said player back after the bye. Some teams manipulate the IR to get additional bench spaces. Some choose not to deviate from their draft unless they really have to do so. We go over the rules every year before the draft. Everyone agrees and we move forward. We don't tolerate someone being a "busybody" and trying to get people to fill a complete lineup. If you did, great, if not, you get what you get. We knew the consequences when we signed up to play.