Well, not exactly. My point is it helps in some ways and hurts in others. It's a trade off. The question is which is more. Also, we don't scrimmage much, if at all, during the season.
I'm not sure how GT does it under CPJ, and
@Ibeeballin or
@flea77 can chime in here since they first hand knowledge, but usually the 1st team defense will scrimmage against the scout team full speed to simulate looks the coaches think they will see in the game. So the better the players you have at the scout team level (whether it's redshirts, walk-ons, or older players who never broke through) the better prepped you are during games to defend it. For instance, you can read about how Jabari Hunt helped the 1st team offense during the 2014 season here:
http://georgiatech.blog.ajc.com/201...jabari-hunt-days-to-move-to-defensive-tackle/
The vice versa happens with our first team offense and the scout team defense. That's why walk-ons and scout team guys are referred to as tackling dummies. They're job is to mimmick the other team's offense/defense during these scrimmage sessions to provide the 1st teams the best possible prep. You can read about how well prepared BC was for offense because of the guy they used to mimmick JeT here:
http://www.myajc.com/news/sports/college/boston-colleges-myles-willis-eager-for-shot-at-geo/nsP3y/
I also like how some posters are totally overlooking my statement that having a personnel of an option offense does limit us in practice...namely, with our QBs. If you're telling me our offensive personnel, at the 3rd and scout team level, is just as good of a prep for our defense as say...any other team that doesn't run our offense then you probably think a walk on QB is just as good as JeT. Our QBs for the most part are not strong passers to start off with. You have teams like UGA, Clemson, UNC, Miami, Duke...teams who we play that have 4/5 star QBs and tight ends on their scout teams giving their 1st teams high level SAs to practice against.
There's a saying in the Bible (not to get religious):
As iron sharpens iron, so one person sharpens another.
Whether it's in skeleton drills or full blown scrimmage, the better talent you have on the scout team level, the better looks you can give the defense or offense. Because we recruit option QBs who are not strong passers and because we don't have TE, we are not as equipped as the teams I mentioned to give our defense the looks it needs in practice.