A good initiative by Coinbase CEO Brian Armstrong, such donations definitely help encourage Bitcoin developers, especially new ones who are enthusiastic but do not have enough support.
In fact, there are many problems that the Bitcoin network suffers from, and it would be good to support developers interested in finding solutions to these problems and developing the network to obtain the best performance.
I also hope that there will be a move to support second-layer solutions, such as Bitcoin Lightning, which were long overdue, even though work on developing them has been ongoing for many years.