Not having a firm release date is not self sabotaging. That language in itself is reaching
Self sabotaging is never talking about a release of your own game for 6 months all the way up to a potential release date, refusing to answer any questions from fans about the release, and removing any mention of it from trailers and your own website.
If Square Enix haven't got a marketing deal with Sony, then what they are doing is absolutely self sabotaging the sales of the PC version.