No.
Aside from the across the board bad testing numbers, there are a number of limiting factors at play here:
1. Anyone selected basically will have missed all of the OTAs this year. They'll come into training camp far behind all other rookies.
2. The draft pick for 2019 will age a year more quickly. Players taken will accrue a season in 2018. So you're looking at in essence a 3 year rookie deal -- assuming this first year is a complete redshirt season.
3. These prospects all had red flags to begin with. The above two are in addition to that. And of course the mediocre/poor testing numbers is flag #4.
Generally speaking, unless there is a really good prospect, then these supplemental selections are best left to bad teams. Seattle is already missing our 2nd round pick for next year. It's unwise to take one now.
Better to roll the dice and try to take one as a UDFA once the draft concludes. That is if there is one you even like. At this point, most teams are already largely set cap wise. With modest reserves held back for injury replacement.