Wilson definitely had the advantage of spring ball, but it's not unreasonable to think that Huard could learn a playbook over the summer and fall camp.
I'm not sure what you're getting at with the "eggs in one basket" comment... Even at the highest levels of CFB, it's extremely unusual to have two starting-caliber QBs. Teams like Alabama (Hurts and Tua) or Texas (Ewers and Manning) are the exception, not the norm—especially in the modern era, when serviceable backups can transfer elsewhere to make another run at the starting job.
Utah did a good job landing Wilson, getting him on campus early, and preparing him over the spring. They were certainly looking to the future (near-term and long-term) when they did that.
Utah also did about as well as they could in the transfer portal; landing Huard was great work, given that they were returning Rising (widely regarded to be a top-10 QB), and had a 4-star freshman QB with strong family ties working out with the team during spring ball.