you are saying a ban on "gold" "imports". that will only affect gold prices and if gold becomes even a little bit scarce its price will go up. and gold price and bitcoin price have not been exactly taking effect from one another and it certainly has no effect on altcoin prices.
and the article seems to be mostly "ifs" rather than facts.
The article is certainly speculation of things to come. However, as you mentioned scarcity due to import restriction increasing price intuitively makes sense, however let's consider that in India, gold was a conduit to hold unaccounted for wealth. With this option greatly stripped if imports are banned, those seeking to store unaccounted for wealth will need another medium to accomplish their objective.