Its the fact the account has a cheating infraction on it period. If someone looked up your steam profile it'll state cheating infraction. Regardless of what game you play on that account people will label you as a cheater just for that. That's why when a steam account has a VAC ban associated with it, expect the price to be 1/4 of what it normally goes for.
My estimation, your account is only worth like $3 now since most 6 digits go for $10ish.