Reply To: Can the severity of a sin be learned from the severity of the punishment?

I just remembered Tosfos Gitin says that we force freeing of a slave (a lav) to allow a chatzi even chatzi ben chorin to allow because pru urvu is a great mitzvah.

what is pshat, when the baal frees the chatzi eved. does he get an aveira? Is he over a lav?
Are we saying go ahead do the aveira for the greater good In berachos we say for rabim too can free slave for minyan.
Or no in that case it isnt an aveira.?

and does this have any relevance to our discussion ?