It's not a matter of expecting them to "solve" it. The point is that they offer it as a payout option and thousands of hosts use it. As such, it will definitely be an issue for many and they will definitely be fielding this question a lot. Therefore they should be prepared to answer it or offer a solution or some sort of answer.
Secondly, we would prefer all our payouts go to PayPal because every payment that we receive to our bank account must be transferred there anyway. That is where we hold all income and funds, including security deposits, so that when a guest checks out they can be transferred to the owner's account, or ours or refunded to a guest, etc. It is our central holding place and we were trying to see if other sites like VRBO or Booking.com could payout to PayPal as well, like AirBnB and TripAdvisor.
So now it is a matter of which is more inconvenient. Logic alone states that when suddenly in one year a huge majority of people will have to figure all this out it will be a huge mess and there will be lots of confusion and mistakes. We wouldn't be surprised if the government alters the rule a bit or comes up with something to mitigate the issues.