I agree that ease of use should be top tier requirements that an explorer must meet in order to be considered a good one. Even if you are not a beginner per se, I still think that platforms with not too much complications even after much development are the best.

That's why I think blockchain.com is the best explorer out there. It offers an array of services without complicating things. It has a very user friendly interface so it is easy to use. Ofcourse there are more factors to consider but this is just one of them.