I had the butterfly keyboard for 5 years yet I didn't have a single problem with it. And I'm a long time mechanical keyboards user. What is all the hate about?
That's not to say your situation is unique...there are probably many machines out there that have not had problems, including one owned by my wife. But there are also an unusually high number of machines that did.
"Cost"
I'm a native English speaker and nobody told me this (and I didn't manage to pick it up) until I was nearly 40. "Cost"'s past tense is also "cost."
There's another, newer, largely fatuous, verbed "cost" that means "to calculate the cost of something." That's the one that gets used in the past tense ("the projects have all been costed.")
"I've costed a keyboard replacement for my computer, and the total is more than the computer cost in the first place."