Pretty misleading.
One was replaced (Charlton) with a much better player.
3 are starters, 2 of whom are injured. A 3rd player is injured so we don't know how good he is or isn't.
The other starter (Awuzie) is basically a 2 yaer starter who struggled this year but was pretty solid last year.
The last guy is Hill, for whom the book is still out given he's been here less than a season.
The way that tweet is presented makes it sound like we've had 6 misses the past 3 drafts, but that's not accurate at all.
And that's not even mentioning the deeper round players who have contributed nicely, like Gallup, Xavier Woods, and Tony Pollard.