transacted() after from()

I ready in the Camel In Action book:

“NOTE: When using transacted() in the Java DSL, you must add it right
after from() to ensure that the route is properly configured to use transac-
tions. This isn’t enforced in the DSL because the DSL is loosely defined to
make it easy to maintain and develop Camel. There are a few tradeoffs such
as this.”

The book was for Camel 2.5, so I wonder if this has changed in newer
versions of Camel.
Any idea?