By the time 2015 rolled around it had been...what...8 years since Roth had been back in the band. In that 8 years we got a few tours, a studio album...
Cancer takes people that have seldom done either. They all had their addictions and it is tough to say who did more what and both Dave and Ed caused...
I read this as AVH getting pissed off about people maybe questioning why if Ed wrote all the music did Alex get writing royalties and Michael Anthony...