Why the PayPal balance can be useful
Money may remain in the PayPal account before it is transferred to the bank. If the accounting workflow jumps directly from WooCommerce revenue to the bank feed, that timing difference is difficult to explain. A separate clearing balance provides the bridge.
Refunds should move through the same story
A PayPal refund can reduce the payment-channel balance after the original sales day. Recording the refund as its own dated accounting event keeps the later reconciliation understandable.
Do not copy Stripe assumptions automatically
Both methods may use clearing accounts, but the business can choose different account codes and operational checks for PayPal. Payment handling is configured per method rather than embedded in WooCommerce logic.