Has any Indian been executed by Houthi or all released after diplomatic discussions? Iran has legitimate quarrel with Israel
They don't really have to go as far as executing an Indian. The ships that would've normally gone through the Suez Canal are being forced to go around the Cape of Good Hope route. That means higher shipping costs since the shipping companies will have to use extra fuel and there will also be significant delays in the arrival of commodities. All this will surely increase the costs of products to Indian consumers which means the demand decreases due to which there is less potential for taxation which means there's less money in the government's kitty for development. This is only as far as imports are concerned.
Indian exports were attractive to consumers overseas due to their cheap prices compared to competitors will now face a similar price increase due to shipping costs, which means lesser demand for Indian products.
On top of that, we can't even push for the early development of the IMEC route because the talks for the normalization of ties between Israel and Saudi Arabia have been suspended thanks to Hamas (another Iranian proxy).
I don't care what quarrel or beef Iran has with Israel but their actions have affected us. This has cost us at least a few hundred million USD if not billions. So, yes, Indians definitely have a reason to be annoyed with Iran.