It could be an increase of security given the recent incidents in Phuket and Krabi. There is already tightened security in place at Koh Samui because of these incidents. Maybe they’re doing Bangkok also as a precaution.
I agree with you wholeheartedly in trying to answer peoples questions in good faith. Other responses here are not very helpful, in my opinion. And I think that you are correct in stating that it’s important to travel around visiting hostels and networking to see what would be a good fit for the OP.
Of course. But surely there will be an official announcement on an official Thai website when/if this happens. Then we can all read it and take away the information we need.