My only qualm is that similar slash-shenanigans can already happen and cause the same issue with subdomains. How many regular users are going to know the real

My only qualm is that similar slash-shenanigans can already happen and cause the same issue with subdomains. How many regular users are going to know the real tdl of the below link? Two subdomains one containing many fake slashes. paypal.com/long/path/to/my/account/.my-evil-invoices.com/transactions.csv