Angled USB connectors

[Be1n]

Is anyone familiar with the logic behind them? Are they supposed to protect the cable itself or reduce strain on the port?

 

[OlyAR15]

If you need one, you will know.

 

[Be1n]

For serving a purpose like this:

https://images-na.ssl-images-amazon.com/images/I/6174up2PCAL._SL1001_.jpg

You mean as long as it works one that's at an angle isn't needed? Ads seem to say that they're 'healthier' for the port in the long run.