Does Mac really not have keyboard shortcuts to jump to start/end of a document?

Solution 1:

For moving the insertion point to the beginning or end of a document and scrolling it into view:

• ⌘↑ or ⌘↓.

For scrolling to the beginning or end of a document without moving the insertion point:

• Extended Mac keyboards have dedicated Home and End buttons.
• All Mac keyboards with a Fn key provide the Fn← and Fn→ key combinations which map, respectively, to Home and End functions.

Note that all of the above behavior is standardized across most Mac apps via system frameworks, but any app is free to override its key-down event handler to behave differently. For example, some apps may choose to move the insertion point when you press Home / End. An application may offer the user a preference or setting that controls this behavior.

Solution 2:

So, exists in Word, checked in the Word help:

Solution 3:

According to this support document https://support.apple.com/en-gb/HT201236

Command Down arrow moves the insertion point to the end of the document, and Command Up arrow moves the insertion point to the start of the document.

That works in TextEdit (the exemplar of MacOS TextView APIs).

Command Home and Command End often work in other apps, such as BBEdit. (Command on Mac being analogous to CTRL on Windows.)