As long as there is a regular rotation between night bonus and non night bonus, I think it's okay. If one world is night bonus and the next is non bonus, cool. I think a lot of people like the strategy of needing to be 'on' 24/7. I suppose it adds a skill factor, for lack of a better word, for players who are more dedicated than others. Plenty of people set alarms during the night, and if you aren't a serious player, you won't. This update shifts the balance of power more into the favor of non-serious players, which may be good or bad for game population, it will be hard to know until it is implemented. But it is true that this probably will hurt the serious player population, which is pretty much what continues to drive TW.
If you want a normal TW world, you can wait until the rotation brings one. As long as these settings alternate frequently, and it's not like we see 3 night bonus worlds for every 1 non-night bonus world, I can't (hopefully) see it being a big issue.