That's not a credible source, and at any rate 'showing a preference' for strong verb forms merely confirms what I said: 'Both spellings are possible'.
You won't find too many serious dictionaries making much of that distinction.
I agree that it is important to preserve strong verb forms, but in this case, it is of little consequence, as the vast majority of people won't enunciate clearly enough to bring out the final voiceless plosive compared to voicing it. It is made difficult by the liquid 'l' immediately before it, as liquids and stops are about as different as consonants can be. Most people will be somewhere in between--unless they're trying to be posh.
That's not a credible source, and at any rate 'showing a preference' for strong verb forms merely confirms what I said: 'Both spellings are possible'.
You won't find too many serious dictionaries making much of that distinction.
I agree that it is important to preserve strong verb forms, but in this case, it is of little consequence, as the vast majority of people won't enunciate clearly enough to bring out the final voiceless plosive compared to voicing it. It is made difficult by the liquid 'l' immediately before it, as liquids and stops are about as different as consonants can be. Most people will be somewhere in between--unless they're trying to be posh.
You'll be glad you raised this now, I'm sure. ;)