This sounds to me like Sawyer's goals are to cause yet another fork or to push people to Raku by blowing up Perl. Removing indirect object notation will break every module on CPAN that does I/O and does not use IO::Handle syntax, not to mention the IO syntax provides C++-like new THING (@args) constructors for programmers that want them. TIMTOWTDI.
He says it enforces code that he likes to write, and how he would like to teach the language to new people.
This is particularly incendiary. Whatever happened to TIMTOWTDI? I thought that was a core value of Perl...