I think it's because a lot of people (myself included) are suffering from Riboku fatigue, let's be honest, Hara has crafted arguably one of the greatest villains in fiction but at the same time Riboku has also overstayed his welcome. He was introduced 600 chapters ago and he's still the main antagonist. Not only that but even the formule has remained roughly the same. Riboku shows up with a large army full of talented generals only for Qin to overcome their limits, overcome the odds, and emerge as the victors. The battles at Konkoku Pass, the battle of Sai, Shukai plains, and the (current) battle of Gian all follow this same pattern. Hara for some reason also has to have every Zhao general praise Riboku every 5 minutes when some of this praise is not substantiated.
Ofcourse I'm not making light of Riboku, he's one of the most powerfull characters in the verse but it gets to a point where it's a bit too much.