Azerbaijan does not take pride in its Iranian cultural roots.
Azerbaijan is the same country that has removed Persian inscriptions from the mausoleum of Persian poet Nizami Ganjavi to erase his Persian origins; regularly argues that Norooz is a Turkic festivity rather than a Persian one and argued in front of the UN that the sport of Chogan is Azerbaijani rather than Persian. It has spend millions of dollars on varied cultural missions to claim Persian attributions as their own, and continues to harbour strong anti-Iranian sentiments.
I know and don't disagree with you on this at all. I was referring to the objective reality of those festivals and landmarks, irregardless of what the Baku regime claims. If they take pride in Noruz and pre-Islamic Iranian landmarks, then it is correct to say they are in effect taking pride in their Iranian roots - even if the regime is trying to erase these by reattributing fake origins to these cultural markers.
Azerbaijan's cultural policy and anti-Iranian element makes it a bigger enemy for the Iranian nation than Israel is and ever will be.
Here I would however respectfully disagree. No entity poses a greater and more dangerous threat to Iran - and to all nations, for that matter, than the zionist regime supported by its international lobbies and networks.
Firstly, do not doubt for a second that the "ethnic" disintegration of Iran is Tel Aviv's staunchly pursued goal. Just look at the Oded Yinon and Bernard Lewis plans, and cross check that with their policies. In effect, you have a Isra"el"i hand in virtually every separatist or confessionalist crisis in the region - be it pan-Kurdism, pan-Turkism or etc. It is the zionist regime that has empowered and keeps empowering Baku, too (60% of Azarbaijan's arms imports originate from there). It is US and zionist support that allows the corrupt leadership in Baku to dream of "unification" with Iranian provinces (Turkish backing alone would probably not be enough).
When it comes to cultural policy, international zionism with its messianist globalist element has been busy uprooting all nations with the decadence of liberal modernity it promotes (destruction of the nuclear family structure, globalist ideology against patriotism, etc - I'm sure you're aware of the problematic).
Secondly, and this is what makes zionism so dangerous, is its disproportionate, enormous influence and power accross the planet. This power stems from the fact that zionists beholden to Tel Aviv occupy key positions in global finance, industries, media, in the cultural sector as well as in governmental decision making positions of all major western powers. The Republic of Azarbaijan's reach is a sad joke compared to this.
To get the Schmittian hierarchy of foes wrong would be a major mistake, and a trap. I'm not stating this in order to be apologetic towards the Azari regime, but because underestimating the zionist threat, or not acting according to the fact that zionism is the top of the pyramid of Iran's enemies, i. e. the one enemy all others are in fact subordinates of, would be hazardous for Iran.
The leadership of the IR knows this perfectly well. I remember how at the height of the ISIS onslaught, the enemy was activating its sectarianist assets (Shirazi clan and so on), in order to influence patriotic and IR-loyalist segments of Iranian public opinion into no longer viewing Isra"el" but Sunni Muslims as the major threat. Thankfully their attempts failed miserably. IR-authorities stuck to their principled line and thanks to Iranian state-owned media coverage and thanks to the IR's public discourse, Iranian society did not fall into this trap. Iranians realized who had been behind ISIS from the beginning (namely, the zionist-controlled US regime). The same should apply when dealing with these "ethno"-separatist elements inside or outside the country.