First, foreigners generally don't eat instant noodles very much. They generally have a fast pace of life, and it is best to eat quick-frozen things on weekdays. In their eyes, instant noodles are a very troublesome thing. Moreover, foreign fast food is generally more nutritious than instant noodles, and they are all fresh. Although the taste may be unspeakable, it is still better for people who have eaten for a long time.
Second: foreigners already have forks at home.
The food culture in foreign countries is different from that in China. People in China like to use chopsticks, while foreigners like to use forks. This is something that all children know, so it is unnecessary to put a disposable fork in the instant noodles sold to foreigners. They have it at home, and it's a waste to give it to them.
Third, foreigners have a strong sense of environmental protection.
Generally, the forks put in instant noodles are all plastic, which is very environmentally unfriendly. If the spoon is heated, it is likely to be harmful to the health. So generally speaking, for environmental protection, they will use their own forks, which is actually very convenient to clean up.
To sum up, except for China, the reason why foreign instant noodles don't have forks is that they don't eat at ordinary times and have forks at home, for environmental protection. On the other hand, this is the difference in diet and thought between Chinese and foreign cultures.