In an interview IGN engineer Yazan Aldehayat stated that Valve conducted a lot of tests on the reliability of the Steam Deck, in order to avoid stick drift.
“I think we feel that this will be a really good device. And I think people will be very happy with it. I think it will be a great buy. Obviously, every part will break at some point, but we think that people will be very satisfied and happy, ”- Yazan Aldehayat.
In the same interview, designer John Ikeda added that Valve chose Steam Deck hardware with known performance metrics so as not to risk it.