The vast majority of choices are between things that are roughly on par with each other if used by people with similar experience in them, respectively.. But then you don't have shared experience for when someone is on vacation if everyone is doing the better way in their opinion, or you lose a ton of time on the arguments to choose the best way when it doesn't matter, retrain the majority on the least experienced engineers suggestion as they can offer no negative critiques of their solution, etc.

Very tolerant senior engineers are basically what you want, opinionated juniors are who apply to senior roles and make people seek out juniors who apply to junior roles.

On the other hand, the choice might have bad in the beginning but it is hard to go the better route now, meaning a rewrite to switch to the better way would cost way too much time and resources.

In this case ignorant people would be way better for the company because they wouldn't care. I've gone into a job that was like that and it bothered me a lot that I had to work with a shitty foundation but there was nothing to do about it so the job sucked for me while a junior was just grateful for the opportunity