I would watch this before considering a refurbished iPad.
I personally wouldn't be swayed away from getting Apple's Refurbished products based off of that video, for a few reasons.
1. I think the point of the video was less about issues of Apple's refurbished and more about making a case for "right to repair", which I support.
2. Apple is clear about their definition of refurbished products.
3. Apple's Refurbished products go through a lot of testing, more than their new ones.
4. As for the water damaged board, the lady said herself that she has only seen that twice, so I am guessing but it is probably very rare.
5. How so we know that the water damage was caused prior to the refurbishing?
6. Apple's Refurbished have full warranties.
As for right to repair, I agree with the video when it comes to people taking their Apple devices into independent shops to be repaired, but I do not agree with her that what third-parties call refurbished is equivalent to what Apple does.
Like I mentioned earlier, there is no standard to what third-party resellers call refurbished, and at least in the US, there is no consumer laws defining refurbished. They could power the device on, see that it works, lick it clean, and call it refurbished.
At least with Apple, they define how they refurbish their devices.
I have purchased and own many refurbished products from Apple, and in the last 15 years, most of my Apple products are refurbished.
I have not had one hardware problem with Apple Refurbished devices I have purchased, but in the last 5 years, I have had HW related issues with 4 of the Apple products that I purchased new.
Actually, my oldest Mac that I still use daily is an Apple Refurbished 2006 Mac Pro 1,1 that I purchased in 2007, and it is still going strong.