RE: Dan Larimer Cannot Censor Accounts with 51% of Hashes

it's great to know that the blockchain technology is this resistant to censoring, two questions comes to mind:

is it the same case for the majority of blockchains out there?
and what's the effect of censoring attempts on the blockchains that require a big number of transactions in a short time, I would imagine a user would be frustrated after few minutes if their post can't be submitted on a platform like steemit.

of curse I know it's a totally different platform but it's a mind exercise for me to imagine these cases.