You can eat dried squid raw if you want too but it's not as flavorful as cooked dried squid.
I tried dried squid raw before and I didn't really like it but when it was cooked the dried squid tasted much better and I though I would never like squid at all.
Dried squid is sometimes served in things such as sushi or sashimi and as long as the dried squid is fresh it's okay to eat it raw.
Your tastes may vary but I would not enjoy it myself when eaten raw.
Many people though do eat dried squid raw and they like it so it's a personal taste.