The app has no problem figuring out which building provides the most culture. Not sure why you would think a computer can't figure out the largest number in a set of numbers, but whatever.
Because, again, you're assuming everyone needs and wants what you want. I have the lighthouse of good neighborhood. If people polish my mana/culture buildings, those buildings give me an extra 17.5% mana. Mana is worth a hundred times as much to someone in later chapters unless they already have lots of mana producers. I happen to have lots of mana producers.
Which building does the game decide people should buff:
- Rise of the Phoenix with 9100 culture
- Manta Ray, which only has 1520 culture, but produces 16,000 mana per day, so if it's polished I get an extra 2800 mana for collecting that day?
The game literally tells you to keep your culture at 150% so people can boost you higher.
A single quest tells you to do that -as part of teaching you that you have some control over your culture level. The game goes not tell you to keep it there forever.
As for MH being helpful you can get 100x more money by just visiting every city near you and helping them until you are maxed out.
Only five times, actually. The MH can receive 2,000,000 coin from ten people, while my 168 neighbours get me 10,080,000 if I help every one of them.
As it happens, I can do both. The two million stored in my MH from neighbours helping it is in addition to the 34,000,000 it holds from other sources, giving me 36,000,000 to use.
I constantly have to spend gold on stuff from the wholesaler that I don't even need just so I can collect more gold from my houses because I'm at the gold cap...
I spend gold on KP just about every day (plus sometimes on a single good that is in short supply) and am glad to have it. If ten of my FS members help my MH each day, I can buy an extra KP every day and have gold leftover (My KP currently cost me 1,800,000 each). That's on top of the 5 KP I can buy every day that I help all of my neighbours. And my MH is an easy target the people don't have to look around for.
The point being, you and I do not have to play the game the same way. Asking the developers to remove a mechanic because you think it's useless is likely to bring to your attention other people who value it.