That's not true. The Russians have always designed and built fine, functional aircraft using what limited resources are available in that country. Their pilots though tend to be more reckless than ours and prone to take more risks though.
Making of a Sukhoi Su-30 Flanker
“The Russians have always designed and built fine, functional aircraft using what limited resources are available in that country.”
It looks like one of the resources that they ran out of was canopys