Blockchain description lacks some details

[slrslr]

https://github.com/lbryio/lbry.com/blob/master/content/faq/what-is-lbry.md , section "How and why LBRY uses blockchain" does not mention if the information can be removed from blockchain, how it is with energetic footprint and who pays that, where is the blockchain stored and estimated size and growth to imagine it.

Thank You