The Great Filter provides no explanation here. There are four options: early filter, late filter, multiple (early and late) filters, and no filters. In the first three cases the existence of early filters is explanation for an empty sky. (We are getting very close to the capability to build von Neuman probes though, so I'm not sure an o sky is evidence for a late filter.) In the case of no filter however, we can expect that any intelligence would start expanding into the universe at near the speed of light. So the fact that our light cone doesn't contain other intelligences, so far as we can see, is also consistent with no filter. An observation which is evidence for a proposition being both true and false doesn't provide any useful evidence.
In the 'there's no filter, and colonization bubbles just expand too rapidly for other organisms to get advance warning' scenario, there's a fairly small window of time between 'the first organisms evolve' and 'no more organisms evolve ever again'. But in the absence of an early filter, that small window should occur early in the universe's lifespan, not late. The fact that we live in an old universe suggests that there must be an early filter of some sort (particularly if colonization is easy).
An Article on Motherboard reports about Alien Minds by Susan Schneider who claiThe Dominant Life Form In the Cosmos Is Probably Superintelligent Robots. The article is crosslinked to other posts about superintelligence and at the end discusses the question why these alien robots leave us along. The arguments puts forth on this don't convince me though.