Where does this take come from?
Grichuk is a career 105 wRC+ hitter. We know what he is and his advanced metrics are actually down the past 2 years. When he gets on a hot streak, you can ride it out, but otherwise, there's no reason to force him into the lineup. He's a great 4th OFer.
Tellez is on the right side of the platoon and posted elite statcast/advanced metric numbers last year. I think we need to see if he can sustain the success he had last year. If he can't, then Grichuk is a nice fallback option.