Re: Linus does good work.
There's nothing wrong with "This is a bad idea because of ..., I will not be accepting this into the kernel".
That approach works for the first 'n' times*. Then from n+1 it starts to get personal. Linus is probably at n^2. :)
Values of 'n' can vary wildly based on your general disposition, last time you got laid, how many kids you have etc etc..