One of the primary reasons why Angular has become less popular is due to its complexity. It requires more knowledge and experience than other frameworks, which can make it difficult for beginners to use. Additionally, the complexity can lead to errors and bugs that are difficult to debug.
Another factor is the lack of flexibility. Angular is a monolithic framework that requires developers to use all of its components to create an application. This limits its integration with other frameworks or libraries.
Angular has also been slow to adopt new technologies and trends. For instance, it has yet to fully embrace web components, a new and powerful web development technology. This lack of adoption has resulted in a lack of support from the developer community, which has caused some developers to turn to other frameworks.
Finally, Angular has been criticized for its lack of scalability. While it is possible to build large and complex applications with Angular, it is not suited for applications that need to be quickly scaled up. This can be a major issue for businesses that require their applications to be able to scale quickly.
In conclusion, Angular is a powerful framework that has been used to create many successful applications. However, its complexity, lack of flexibility, slow adoption of new technologies, and lack of scalability have caused it to fall out of favor with many developers. As a result, other frameworks have become more popular in recent years.