In the comments of that second link you provided, someone made a salient point:

At the end of the day, it all comes down to content residing on someones hard drive. That will cost, either directly through cloud services, or indirectly by decentralized storage like the libry app where users donate their disk space and bandwidth. It is not clear to me how the new system works, and who carries the cost?

Odysee's response was this link, which another commenter then pointed out:

I love how Arweaves biggest flaw (bandwidth) is only mentioned as a cliff note "Notably absent from Arweave's formulation of the Kryder+ rate are bandwidth costs. Arweave covers this using a separate set of karma-based incentives – see here." And the article linked just dodges the actual question at hand by throwing an empty promise to incentivize people to give their bandwidth for "karma"

So Arweave is literally just Peertube with another brand new crypto on the backend to incentivize people to start using it and ultimately 'sell' their hard-drives to the blockchain to be used to host the video content. Otherwise, you need to pay to 'permanently' store your content on the blockchain for a baked in 200 years worth of storage time (so, I imagine that will be rather high).

It should also be noted that in the FAQ regarding what will happen to LBRY Coins once this new crypto replaces it, they simply say "It'll still be yours to do with as you please!", I.E, this shit is worthless now since nothing will use it, but hey, it's your shit, and that counts for something!

Again, I would highly recommend viewing Folding Ideas video on the subject if you haven't yet. This is ultimately going to be another thing that makes the creators a tremendous amount of money, but will ultimately crash and burn for everyone else.