Its a SEBI rule that HNI allotment should be on proportionate basis...I will raise a complaint with SEBI..I am in market from last 25 years and i am not a new born covid kid
It's also a SEBI regulation that in the HNI category, the minimum allotment has to be equal to the lowest bid amount of the category (check page 503 of the UC RHP). This means in case of over subscriptions the allotment will enter lottery. When someone points out your mistake, it's better to cross-check your stance than throw around your credentials.
I have linked the basis of allotment of Vikram Solar for your reference, which clearly shows that when oversubscribed, the HNI category enters into a mix of lottery and proportionate allotment.
If you're only relying on AI tools, I have attached the response to your original comment from both Gemini and Perplexity.