Sorry, I don't understand what you mean. Hope I'm hitting the right notes here:
1. You're born with an identity and pride is a product of you giving value to the various identities you pick up along in life. You're free to choose your identities, give varying values to it, or discard them as you see fit (with some legal restrictions).
2. LGBQT+ pride month is a commemorative observance to acknowledge the history and contributions of the LGBTQ+ community and their current struggles. Their end goal is equality and acceptance.
3. The point I was making is national holidays already do function for others to practice and celebrate racial and religious pride (e.g., Good Friday / Easter Monday, Thanksgiving, Christmas break for Christmas / Hanukkah / Kwanzaa, etc. in Canada and the US).
If that's not correct, please go into more depth about this hypothetical racial or religious pride month. Other examples I can think of is Ramadan or Chinese New Year. In contrast with LGBTQ+ pride, the goal is to devote themselves to the teachings of Islam and to honour traditions / spend time with your family ushering in the new year respectively. Clearly, very different end goals.
3. The rest looks like political philosophy and conjecture of holidays, so I'm not getting into that. I enjoy holidays because I get days off work. I don't really care about their meanings, but if it means a lot to other people, power to them.
1. Yes, everyone's identity is a combination of changeable and unchangeable stuff. But it is considered progressive to not be obsessed with / fixate on the unchangeable stuff, ie race or in this case sexual orientation.
2&3. As I said above, religious holidays can't be directly compared; they're ceremonies based on religious scriptures / teachings. I don't see how something more educational in nature (as you describe it) is similar. And I fail to see education or celebration pride parades, which looks to me like morally sanctioned exhibitionism more than anything else.
Ramadan or Chinese NY aren't a celebration of Islam / Chinese culture though. They're not observed by adherents to teach something to the non adherents. Its something from the culture for people in the culture.
A lighthearted analogy about the political aspect:
A is the older sibling and B is the younger one. From a time before both of them could remember, their parents bought A a pair of Crocs (the ugly plastic footwear everyone hates). A covets these shoes not knowing that anyone with any measure of sense finds them silly. Seeing this B also demands a pair of Crocs instead of realizing they're stupid. And to keep the peace parents get B a pair too. Here both the kids lack sense and the parents don't care about their kids being stupid. I'm saying that the battle for recognizing holidays is similar.
If anything is an actual holiday though, I too would gladly celebrate by staying home, principles or not.