Not sure what you have had to deal with but that is not my experience at all. More often than not any issues I have had with suppliers is my purchasing department was the one trying to get lower cost goods without getting engineering and Vendor QC involved.

I have never had to deal with an American supplier "downsizing" wire from one guage to the next smaller for example.

Nor as linked above, including extra electronics to exfiltrate credit card data from terminals.