Just to mention ethereum.enable is marked as deprecated in the metamask docs (and might be removed in future metamask versions). This is what they suggest instead:

ethereum.request({ method: 'eth_requestAccounts' })

Would be cool to see the Getting Started page updated with this info.

Actually I need to reopen this. AFAIK the Getting Started documentation instructions for "the easy solution" to connect to Metamask does not work as written. Can someone please help fix it if my proposal above is outdated?

If I understand correctly, @zemse's comment could have been more fully written out as the following?

window.ethereum.request({ method: 'eth_requestAccounts' })

While this looks like it is the correct approach, it is not intuitive to newer web3 devs as the Metamask documentation of the above function makes no mention of needing to be called to spawn the Connect Wallet dialog.