Chess went through a similar transition in the last 10-20 years when computers became much stronger than the best human. Some of her points are valid, some of them are temporary.

1. Professional gameplay changes a lot.

There are no more secret openings/midgames/endgames, you will hardly be able to cheese a top pro (not that it was easy before). Professional gameplay requires memorizing tons of lines and then adding on to add it. There are many chess openings which require memorization till the end result (50 moves) or you risk losing the game. We are going to see a similar trend of memorization in Go.

2. Online casual gameplay changes a lot.

There are lot of cheaters in online forums. Cheat detection has to be built in to the sites or you risk being taken over by cheaters. Easy availability to best moves allows the dedicated player to learn a lot faster than previously where there was a discoverability issue. We see this in the professional chess world where its not uncommon to see 14-16 yr old GMs nowadays.

3. Professional teaching still survives.

Engine can tell you the best move but it doesn't give you a teaching path from beginner to amateur professional to grand master. I am not a master but based on anecdotal evidence people still employ coaches but for much more focussed tasks and more specialized skills (e.g. openings, midgames, endgames).