Too much of anything is not good, which applies to how you water your snake plant. The snake plant is a succulent so it doesn’t tolerate overly wet soil.
Whilst snake plants fare well in dry environments, they can still become stressed from severe underwatering. Symptoms of underwatering can include cracking, curling, drooping, and wrinkling leaves.
Your snake plant’s leaf-splitting problem can also be a result of physical damage. Snake plants have thick, fleshy leaves that can be quite resilient, but excessive rough handling can still cause damage.