It is not a straw man, laws need to be considered just, as far as possible.
Blasphemy used to be illegal all over the Western world, but isn't anymore. Death sentence were metered out in e.g. mid 19th century Sweden -- for much less than Ecce Homo (see previous comment) and Piss Christ.
It is important to lampoon and jeer at ideologies/religions, especially those that insist they have the ultimate Truth and are above criticism.
(Racism/slavery went the other way; it used to be accepted -- but like intolerance to blasphemy, it was put behind us, at least in the West.)
Nobody's talking about legality.