I don't think you understand that the purpose behind achievements is "achieving them". They are not expecting you to get them within a few days/weeks. They are expecting most of them to take months/years. So overall, most of them are fine. Some are a bit crazy like 10,000 behests, but I can see some people getting them within a couple of years.

The gathering ones are probably among the worst and most time-consuming. The synthesis ones are nothing compared to those. But still, there are many people who have the luminary tools without botting or devoting their life to the game.