It may be good idea hundred years back where (only?) government was being all powerful in a person's life . So if government denied people speech they are roughly blocked from everywhere.

Now with huge dependency on cloud/ social platform to conduct daily life they are pretty much government. SO getting blocked from them has much larger impact then it would be 50-100 years back.

Spending time or getting blocked on HN is not as materially impacting as it would be on big cloud services. So it does not compare well.