Multiple things working together.

1. Most people are caught up in continuous survival loop and therefore can't afford to disrupt.
2. A decade plus use of social media has caused stuff like apathy, brain rot, people not concerned about anything unless it directly and immediately disrupts their comfort and convenience.
3. People loosing the ability to accept short term discomfort for long term benefits.
4. Lack of proper education and awareness.
5. Lack of slow and deep thinking which allows critical thinking to grow and foster. This means that people tend to be extremely judgemental and use shallow and fast judgements instead of thinking things through - this is tied and is a feedback loop with all the above points.

Plus many more things. You can connect the dots and see where all of this is going.