Aluminum is not the most "critical export" for Russia.
The Russians are exporting oil,natural gas,grain,precious metals,weapons,etc.
It's still 5 billion and we don't know how much of a deeper impact has on other exports that are using aluminum, it is used a lot in the car industry, packaging, and electronics so while it might not affect too much the raw aluminum exports it might affect others more. Besides, it's not only about affecting exports, but it also makes things manufactured in the country for their own use more expensive or in some cases impossible to manufacture. China screwed up big time trying to impose taxes and then banning Australian coal, let's see how this one unfolds.
The above article claims india imports 85% of its oil from foreign sources. I think they may not be able to afford boycotts of oil, unless they could find another supplier nearby.
But only 2% from Russia, a negligible amount.
What strikes me as especially crazy in all of this destruction and sanctions is how little the stock markets have been affected by this. Many countries around the world are suffering from runaway inflation, we seem to have gotten past the worst of Covid but it's still lurking and now we have a huge war between millions of people on the edge of Europe.
The stock market is flooded with money, the dumps that will happen and that normally should have happened because of lowering economic perspectives are all negated by the fact that simply there is no other investment opportunity of such scale and if some do pull out there are a ton who go all in with a fresh batch of fiat.
I'm also on the same opinion, in times of crisis the stock market and share value should reflect these issues, as you can't expect economic growth with trade restrictions and people getting killed or forced to become refugees in the millions, but with the
US unleashing 4 trillion with 2 more to come, of course, nothing normal or logical will happen till the consequences of this money printing will start to fade.