Honestly, I've seen this play out way too many times. Teams get obsessed with choosing between LinkedIn and YouTube, but the smart ones just upload everything to YouTube and use those links everywhere else. It's the only sane move if you ever plan to grow your video library beyond demos.
Most B2B folks start with a demo, realise it's the most boring thing they've ever filmed, then slowly branch into explainers, tutorials, use cases, product updates - you name it. That whole pipeline lives on YouTube because it's the one platform that doesn't throttle your content into oblivion or bury it under algorithm junk six hours later.
LinkedIn's great for targeting, but it's a nightmare for actually hosting video. So yeah, YouTube as the hub, LinkedIn as the distribution point. That's how you build something that doesn't die the second you stop pushing it.