If the Premier League accept that there's a good probability that the league will be suspended at some point in the near future (as they appear to, citing Govt advice) then I see little point in confusing the issue further by not suspending it now.
The Brighton v Arsenal match is already postponed (understandably) To my mind, it makes sense to postpone all of this weekend's fixtures with a view to making another decision next week, though the situation is certainly not going to get any better in the next few weeks.