The drafting pretty much sucked prior to 2015 when the scouting department got revamped, which is why the cubbards were absolutely bare for most of the last decade+. Since we've only seen Mikko and Jost from the drafts since making those changes, and neither one of them is a finished product, we don't actually know whether the drafting is good enough going forward.
And, the argument isn't to sit tight and wait for the drafting to solve our problems, the argument is that we should at least give our current crop of youngsters an honest chance before we deem them insufficient while also continuing to let the scouts build a reasonable body of evidence so we can properly assess whether they can be trusted going forward. Because, unless we have actually fixed our drafting issues, we're only going to get a couple of years of contending, before we run out of youngsters and have to resort to scraping the bottom of the UFA barrel again. And, after watching us do that for most of the last decade, I really don't want to go back to that method of team building.