Not sure when you're quoting my post from but that lineup seems like what I wanted for opening day. When everyone was healthy, I expected Tellez/Grichuk to platoon based on lefty/right matchups to start and let whoever plays better to take the spot full time possibility.
With the way things stand now, the position should clearly go to Grichuk based on his upgrade defensively and the fact he's batting better than Tellez too. Tellez will have to hit like that small sample size from 2020 in order to have a chance to take the spot from Grichuk.
Realistically, we will probably have one of our regulars out or just needing a day off so both will probably get almost a full seasons worth of at bats assuming they aren't trash.