[Wall of text incoming!]
I'm rehashing a bit here, but so be it. There are valid requests (broken saves, etc.) and there are lazy requests. The valid requests are the dev's "fault" and the lazy requests are the player's fault. Some people just don't want to put in any amount of effort for anything. It is no surprise that these are the same people that can't be bothered to use a search on the game thread. You can't fix these people, sorry.
On the other side, many games are not well made. They have vague choices that don't make sense or really boring grinds, other bad mechanics that just make people not want to go through all the hassle. Game over choices and other things like that. If you have a nice enjoyable game that doesn't fuck around, people are more willing to play it as intended. If it took let's say four hours to finish a game and most of that time was spent grinding stats and generally was a slog, having to do it all over again to see some things you missed is a big ask. This gets into my whole "don't waste the player's time" argument I make over and over elsewhere.
If a game has multiple paths, the more different these paths are, the more people are willing to try them out. If two paths are 90% the same, but have a few different sexy scenes, it doesn't offer much incentive to try it out again. If the paths are only say 60% the same content, then people can feel engaged. Is this a lot of work? Most definitely. You're basically making more than one game at that point. Look at AAA games. Most of them have false choices and are very linear if you step back and look at them. It's a struggle between making a game too linear and adding a ton of extra work by having very different paths.
The alternative to making very different paths is to unlock everything after one play through. So you let the player go through and play the way they want, but at the end you unlock all scenes. So if the player doesn't want to play the entire thing over, but does what to see what they didn't get to, they can just see those scenes. Again, this is extra work for the dev. For an actual example, I played My Girlfriend's Amnesia and did the mostly "gentlemen route." I was curious about the other path and luckily there is a mod that unlocks every scene, so I was able to go back and see what those other options were without having to go through the whole thing again. This is my preferred way to experience a game. I'll play it once legit, but I'm generally not up for round two.
If you really want to stop a lot of these requests, you put this stuff on page one. Have a CG rip, cheats, and a walkthrough right on the same page as the game download. You can just give people what they want. The purists can play the game as intended, others can cheat, and others can just get the CG rip. I know as a creator you want people to experience the game as intended, but the reality is that not everyone is up for that.