That's nothing new - the Electrospaces site has called into question the claims of Snowden and Greenwald on numerous occasions. For example:

- Snowden would not have been able to legally "wiretap anybody": http://electrospaces.blogspot.com/2015/02/snowden-would-not-...

- Snowden-documents show no evidence for global mass surveillance: http://electrospaces.blogspot.com/2014/06/snowden-documents-...

- Document shows that it was not NSA, but FBI that monitored 5 Americans: http://electrospaces.blogspot.com/2014/07/document-shows-tha...

- Screenshots from BOUNDLESSINFORMANT can be misleading: http://electrospaces.blogspot.com/2013/11/screenshots-from-b...