Like I said before Taph and Telamon do share a connection in my own personal universe. Taphs creation was similar to that of 1x, but while 1x was created from Telamons hate, Taph was created from Telamons diffidence, or simply his insecurities. Which is why Taph sees himself as inherently unpleasant to look at and is the main reason why he covers himself so much. That and the fact that he likes to keep a sense of anonymity.
Telamon is an utter asshole before becoming Shedletsky in this universe, so I thought it would be cool if he was responsible for Taph not being able to talk. Hence the scars on his neck. More so like a curse, he can't speak even if he wanted to. I also got the idea of when people "devocalize" their pets, mainly happens to dogs sadly, which is absolutely deplorable and people who do that genuinely deserve the worst.