If it is a one sided battle then there is nothing interesting to watch even if there is a million spectators and West Indies and England is not going to be a close match either as England might dominate them.
This is the main problem which I observed with test matches. Only popular series like the Ashes etc are usually viewed by test enthusiasts while the rest are usually viewed as highlights on YouTube etc.
This is how I watch tests myself though I am not a test enthusiast. Also, England could face some issues even though they are technically a way stronger team due to the COVID effect. West Indies could surpris them if they bowl the right lines and lengths.
Who has the time to watch a match for 5 days when you can watch the highlights of the whole day in just 30 minutes? Test cricket is losing the charm because of the amount of time it consumes whereas other formats do not. This is another why you do not see crowds in the stadium.