The WR depth in this class is overrated/misunderstood. There are six WR's I'd call really good bets, and after them, you have a mix of role players and guys who could go either way. There will be a hit or two from that group, but unless you know which guy will hit, or you have 50 picks in the middle rounds, that "depth" doesn't help much. If your WR room is already stacked, it makes sense to target guys who could go either way later in the draft, because the payoff is significant, and the cost is low. Tampa Bay drafted T. Johnson in the 5th in 2020, and he was a pretty good bet regardless of draft position (excellent bet in the 5th).
The strength of the 2021 class, though, is in the Top 6 guys - not it's depth. The class IS deep at the top. You don't often see 6 WR's who have clear paths to greatness and high floors. There's very little projection with that group. After them, though, you're getting into that zone where you have to project a lot. Guys like T. Wallace, D. Brown, K. Toney, and A. St. Brown show enough to make you think they could be good NFL players, but they carry enough questions or limitations to think they could just as easily be nothing more than 3rd or 4th options in the NFL.
And, after that group, you're pretty much looking at dart throws. When people cite the depth of the class as a reason to pass on WR early, it's echo-chamber nonsense.