He's a high enough prospect that they basically get to burn a year. I think only the likes of a Shane Bowers did an elc the way you mentioned. Others probably like that too, but not the high end guys.
There are pros and cons, but typically more pros.
Get to RFA earlier, but burning eliminates OS opportunities. Only have 2 years to showcase yourself, otherwise, most likely doing a bridge, though Beniers burned and had a sophomore slump and still got 7 years for over $7 mill. So, depends on player and team.
No change in UFA timeline either way, as he hits ufa in 2032 regardless.