Everything you have written is correct.
None of what you have written justifies the ban on Holocaust speech.
The Holocaust is an actual event experienced, witnessed, and even recorded (by the perpetrators). Denying it is pretty much like denying the law of gravity.
Blasphemy, on the other hand, is much more problematic. A 'blasphemer' is one who deny but actually can go further than mere denial. He may also insult or even attribute to himself the characteristics of the godhood. The problem with anti-blasphemy laws is that it tacitly presupposed that a god whom it protects is as real as the law of gravity. The problem is further compounded by the fact that no one ever returned from the afterlife to tell us which religion is the true religion based upon the returnee's experience in the afterlife.
To refuse to obey the law of gravity is to have guaranteed outcome: death. On the other hand, refusal to deny the existence of a god never have anyone lost his life from immediate retribution from said god. Else we would not have such diverse religions in the first place, right?
Gravity is an effect from nature. We can neither change it nor deny it. Likewise, atrocious events like genocides or even a single murder cannot be denied, especially when there are plentiful of evidences to support it. But unlike gravity which has a guaranteed outcome, denial of a single murder or a genocide have no guaranteed adverse consequences. The dead cannot exact retribution. It is the living who exact retribution
IF they so desired.
Which begs the question: Why would Germany enacted a law that while does not mention specifically 'The Holocaust', does indirectly protect this event from blasphemy (denial)?
Criminal Code (Strafgesetzbuch, StGB)
Section 130 Agitation of the People
(3) Whoever publicly or in a meeting approves of, denies or renders harmless an act committed under the rule of National Socialism of the type indicated in Section 220a subsection (1), in a manner capable of disturbing the public piece shall be punished with imprisonment for not more than five years or a fine.
If a person refuse to obey the law of gravity, only that person die. Gravity does not exact collective retribution for the sin of one. But if a person refuse to accept that a genocide occurred, and if he shares the same mentality as the originators of the genocide, the fear is that if he is allowed to propagate that mentality and resurrect the organization that made possible that genocide is more legitimate than the muslims' anti-blasphemy laws.
Like it or not, Allah is not real. What happened to the Jews, aka 'The Holocaust', is real. And that make the protection of records of genocides from blasphemy more justifiable, even though it is in conflict with professed freedom of speech, than the muslims' anti-blasphemy laws, of which blasphemy is legitimate speech.
Show me Allah, or Rama, or Quetzacoalt, or even Jesus is real, and I will fully support the appropriate anti-blasphemy law alongside with 'Holocaust denial' laws.
Funny you should mention cowardly, since that is precisely the characteristic of people who resort to hide behind the anti-Semitism shield when they can't debate the actual issue.
Here's a Holocaust survivor who chafes at the abuse of the label anti-Semitism by Israeli apologists.
TLAXCALA : Unjust accusations of anti-Semitism demystified in booklet by Hajo Meyer
Hajo Meyer* published a remarkable booklet to counteract the conscious abuse of the terms anti-Zionism and anti-Semitism by the State of Israel and its umbrella organizations.
I suppose these Orthodox Jews are also anti-Semites...
Neturei Karta - Orthodox Jews United Against Zionism
That has nothing to do with
YOU. We all know well enough the charge that Zionists rules America is one avenue in many to obliquely cast anti-Semitic insults at global Jewry. We also know well enough that
YOU are one of those who so casually sling it. Be man enough to admit what you are.