Why the low draft grades?

For this year's draft to be worth it, Olave has to be an instant impact player, and Penning really also needs to start and play well. The FO got away from borrowing against the future by letting some stars go to reduce our cap and get our overall personnel costs in line. However, we've mortgaged our draft future, so we are still in a "Win now" mode. What we've done in the draft this year says to me that the FO believes we can win the NFC South and compete in the playoffs. Nothing less is now acceptable, or else this experiment will be a bust.
Every move they've made since Sean retired has been "win now" and you can't argue against their logic. It's a team that had a winning record despite losing its starting QB, #1 receiver, backup QB, living away the first 5-6 weeks of the season, and a covid outbreak among coaches. The defense is a top 5 unit and we have multiple key players(under 30) in their prime. If Loomis wanted to blow it up they would not have retained 95% of the same coaches. Instead of thinking we could get by with budget WRs we went out and got a guy that was ranked among the top 5 WRs by most scouts. There is no such thing as a sure thing but they made aggressive but pragmatic moves.