What is the contradiction of Ethereum?

Ethereum has been a great success as a pioneer of blockchain technology. However, as it has grown and spread, some contradictions and issues have become apparent. Although its founder, Buterin, has maintained a strict neutral stance, the contradictions have become a source of dissatisfaction among the public.

Although Ethereum is committed to decentralization and touts decentralization, it is quite difficult to scale the network while maintaining decentralization.

As a result, the more decentralization is increased, the more scalability and transaction speed are sacrificed, making the platform difficult for users to use.

Development of Layer 2 and other technologies is also underway to solve this problem, but these technologies are complex and require the assistance of a limited number of people to use them. It has become necessary to rely on a few experts, and decentralization has been sacrificed.