What are the drawbacks of using Typo3 for creating websites compared to writing code individually?

One drawback of using Typo3 is that it can be limiting in terms of customization and flexibility compared to writing code individually. To overcome this limitation, one can choose to write custom PHP code to have more control over the website's design and functionality.

// Custom PHP code snippet for creating a website without using Typo3
<!DOCTYPE html>
<html>
<head>
    <title>Custom Website</title>
</head>
<body>
    <h1>Welcome to my custom website!</h1>
    <p>This website was created using custom PHP code for maximum flexibility and customization.</p>
</body>
</html>