I'm personally fine with this. FTP is a different protocol, just like BitTorrent. It's not part of the modern web, so it's just another loose end to tie up. Even though it will be around for a while, it's not relevant to Chrome's user audience/usecase.
I'm not fine with this. I'm of the mindset that code written 20 years ago should run today. This is a breaking change on a critical piece of internet infrastructure. Google, by nature of operating the most popular web browser, has a moral obligation to the community to provide a stable environment. There are something like 10^9 webpages out there. How many of these will become less accessible because of this change?…
Really, though? Are there any examples of any web pages that are strictly available from FTP instead of HTTP? If so, why? Isn’t HTTP made specifically for the purpose of transporting hypertext? Why use another, more general protocol when you can use the one made specifically for your use case?
I’m sure there’s good stuff on FTP still. I really, really doubt people are throwing SPAs and PWAs on FTP servers though.