Inconsistency with EXPLAIN ANALYZE CREATE MATERIALIZED VIEW

EXPLAIN ANALYZE CREATE MATERIALIZED VIEW doesn't go through
ExecCreateTableAs(), but does use CreateIntoRelDestReceiver().

That bypasses the SECURITY_RESTRICTED_OPERATION in ExecCreateTableAs().
That is *not* a security problem, because the
SECURITY_RESTRICTED_OPERATION in CREATE MATERIALIZED VIEW is merely for
consistency with a later REFRESH MATERIALIZED VIEW command where the
SECURITY_RESTRICTED_OPERATION is important.

But it is inconsistent. For example:

  create or replace function set() returns int
    language plpgsql as $$
      begin
        create temp table x(i int);
        return 42;
      end;
    $$;
  create materialized view mv1 as select set(); -- fails
  explain analyze
    create materialized view mv1 as select set(); -- succeeds

Relatedly, if we can EXPLAIN a CREATE MATERIALIZED VIEW, perhaps we
should be able to EXPLAIN a REFRESH MATERIALIZED VIEW, too?

Comments?

Regards,
    Jeff Davis