I wouldn't read into blocked vs filtered. The report itself doesn't differentiate. This is just a BBC journalist trying to use varied vocabulary which is nicer to read.
Can you please link us to their editorial policy that you're using as a source for this? For all we know this could just be an entirely speculative, biased asserition on your part - without context, we don't really know.
for all we know the original text from the journalist could say 'remove' in both places - without context, we don't really know.