Of course running ability is important. However, once again I'm getting the impression that some people think it is the only thing. We have had many players run over a 7 flat 60 that are now in the Major Leagues. We have had many players run over 7 flat that have played or are playing at the very highest level of DI baseball. We have picked players to play in the PG (formerly AFLAC) All American Classic that never ran a 7.00 or lower.
Also, the showcase mentioned in the OP must have really lacked any talent. I have never attended a showcase where there were zero DI prospects. And I really can't understand why any DI coach would tell the entire group there is no one here that can play DI. It might be honest, but is it necessary? What if honesty was you all stink and will never play college baseball at any level so you have wasted your money showing up here today? Should he say that to the group?
Scouts and college recruiters are looking for talent. When they see something they like they keep following up. So if the 60 time is great, they want to see that player throw and hit. However if a kid shows well fielding, throwing and hitting... They will check back and see how he ran. Then they watch hitting and if a kid shows exceptional hitting tools and power, that will trump all the other tools. So the truth is, it is not running ability that is number one... It is HITTING ability.
And if a scout or college coach doesn't see what he likes, what is his reason for saying that. Every scout that ever lived along with every college recruiter will readily admit they have been wrong about players at times. So is telling everyone they can't play DI baseball really being honest? My guess is the coach made this speech in a motivational sort of way.