Me.

Who lied to me?

That does not make sense

You can use pop still, just not to see external emails in gmail web (and you cant use imap either to do that)

The linked page don't say that. Pop will still be supportedand imap was never an option for adding external accounts in gmail webmail

You can't do the same thing with imap.

Yahoo doesn't allow forwarding anymore

IMAP was never supported and is still not supported for external account un gmail web. And they don´t remove pop. You can use pop to access your gmail in any email client or in the app if you wish.

You didn´t understand the article. You can use your gmail with POP or IMAP. What you won´t be able to do is to use POP (IMAP was never an option) to download emails from external account into your gmail account.

In the gmail app you can use both protocols POP or IMAP. The article is about fetching external accounts in gmail web.

The article isn't explicitly clear about whether or not POP will continue working with the mobile apps or not though.