That split tube problem is way more common than it should be. The real issue isn't the seal, it's the cheap plastic they use that gets brittle. I've seen it happen with a few different brands straight off the shelf. Your best bet is to transfer the paste into a small, sturdy plastic jar as soon as you buy it. Saves the mess and you won't waste the product.

Yeah it's a cool fact, but honestly it doesn't change the day to day. The real trick is just making sure everyone feels welcome to try it out now.

So you hit that point where the system itself becomes the job. How do you even start to fix it once you're already deep in, like @nelson.wren was?