Most experienced people in the industry also think it's rather worrying - or "barking mad" would perhaps be a more accurate summary.
I've to date come across two people who thought it was a good idea. One was a sponsored cadet who saw it as his route into a big jet flight deck, and one was a recruiter for BA. Both, frankly have too much vested interest to be independent experts.
CRM and multicrew training must be essential for anybody getting up the front of a big jet - and those have historically been the big omission on those flight decks. But that does not replace handling skill and command experience - which will be needed by enough airline co-pilots, enough times, to justify retaining that skillset.
G