To use an ORM effectively you must learn both the API of the ORM and SQL. It does not absolve you from learning SQL, which I think was one of the unstated attractions to junior developers. Then you have to map between the API of the ORM and how it translates that to SQL under the hood. Then you have to understand how it handles caching and sessions and how that all works under the hood. This has been the source of so much complexity and so many bugs over the years that I no longer think the benefits are worth the cost. As always, there are exceptions and caveats, but I now believe it's better to use SQL directly than to use an ORM. In general there is too much complexity in all the layers of abstraction in software development these days, and I think the industry is strangely blind to the consequences of this. Complexity is death to software, and it should not be taken on lightly. The entire craft of a software engineer boils down to eliminating complexity and simplifying problems, the better you can do that, the more productive an engineer you will be.[1]
[1] https://github.com/sqljoy/sqljoy/blob/master/docs/pages/orm....