It's these types of implementations from major social networks and apps that will drive Bitcoin price to insane levels (supply / demand).
Great news for Bitcoin, AirBNB is a huge step forward.
It also depends on whether the public adopts Bitcoin, if the Bitcoin payment option doesn't get enough use, they would be removing it most likely.
The fact that Circle stopped dealing with Bitcoin was already a step back, I've seen a lot of former Circle customers complaining about their 'exchange' of choice removing the option for purchasing Bitcoins.
Having user-friendly exchanges is also part of having a healthy Bitcoin ecosystem, the success of Bitcoin as a payment method can't just rely on merchant adoption.
Personally, I'm lucky enough to live in Belgium, where I can just buy Bitcoin instantly through bitonic.nl
I purchase them at a higher price, but the ease of use is something I've never seen in any other exchange, I don't have to wait to get verified, can pay instantly with bank account + card-reader.
I guess there are similar options for people in other countries, but I assume this is not something that is available for every country.