(I think you mean the other way around.)

But the difference is almost meaningless in this case because in practice the c blends to the d, which is voiced.

It matters what the tongue and voice box are doing in the surrounding sounds. The next letter (t) is voiced, and the prior sound is a vowel, so in practice many English speakers will continue to “voice” the c sound between e and d, the “g” is just a voiced “c”, which makes them homonyms in most speakers.

(This post brought to you by YouTube, who keep putting Dr Geoff Lindsey in my recommendation queue, and now I’ve become a part time linguistics enthusiast. Other interesting facts: “chr” and “tr” are also almost entirely homonyms in most speakers. Try saying “trooper” and “chrooper” and see what I mean. In fact my 4 year old, who is recently learning to write, drew a picture of a truck and wrote “chruck” on the paper.)