He is right*
At your level your priority should be Skill Leveling Up SR Weapons before SSR since they'll take less resources and so on, a half maxed 30000 Attack Grid completely dominates and decimates in Damage a 50000 Rainbow Weapon Grid, I use + Character Attack on my main team and I hit for 80k off attribute and 110k+ with advantages, you have to be aware of your priorities if you want to have a healthy end-game If I were you I'd start skill leveling up my weapons as soon as possible.
Cheers