Can a CROSS JOIN be "implicitly LATERAL"?

Assume the following, rather simplistic database:

CREATE TABLE test_table(
  name TEXT,
  data JSONB
);
INSERT INTO test_table VALUES ('name1', '{"a": 1, "b": 2}'), ('name2', '{"c": 3, "d": 4, "e": 5}');

so we have the following table:

# SELECT * FROM test_table ;
 name  |           data
-------+--------------------------
 name1 | {"a": 1, "b": 2}
 name2 | {"c": 3, "d": 4, "e": 5}
(2 rows)

Now I've seen a query like this:

# SELECT * FROM test_table CROSS JOIN JSONB_EACH(test_table.data);

returning the following result:

 name  |           data           | key | value
-------+--------------------------+-----+-------
 name1 | {"a": 1, "b": 2}         | a   | 1
 name1 | {"a": 1, "b": 2}         | b   | 2
 name2 | {"c": 3, "d": 4, "e": 5} | c   | 3
 name2 | {"c": 3, "d": 4, "e": 5} | d   | 4
 name2 | {"c": 3, "d": 4, "e": 5} | e   | 5
(5 rows)

My problem is that I do not understand what happens here. On the one hand, this looks like a LATERAL join, since the right-hand side of JOIN refers to the left-hand one, and the result is perfectly logical. On the other hand, the manual says this:

(Without LATERAL, each sub-SELECT is evaluated independently and so cannot cross-reference any other FROM item.)

and this:

The column source table(s) must be INNER or LEFT joined to the LATERAL item […]

(see here), and of course the CROSS JOIN does not return n×m rows (as this page says).

My question is: does the result of the query above not contradict the manual? If not, does that mean that JSONB_EACH is somehow treated specially? (That I would find surprising.)