I don't know if it's more responsible for the researchernto ouvlish their educated guess immediately - it's perhaps more likely than not to be right based on their expertise and they truley believe it's a really issue and might feel obligated to talk about it. Or, if it's more responsible to do the work first and get some preliminary evidence. Those few days during the pandemic could be crucial for rapid response, and if there's a strong rationale for it maybe it's worth communicating, but this isn't like "it can spread in xyz manner" that really changes behavior - you still be have to do social distancing whether or not Advil makes you more susceptible -is the panic that your painkiller will give you the coronavirus worth it?
https://www.thelancet.com/journals/lanres/article/PIIS2213-2...