Disclaimer, this was posted before I've noticed they've actually delayed it further. That said most things are still relevant.
Just as a FYI, This poll is a bit broken by its choices, cause they essentially (can) contradict each other.
Whether or not it's smart for CD RED to delay the game or not is completely irrelevant to how many/few issues there are at launch. because one is from a business standpoint and the other the customers own view.
Is it smart for CD RED to delay?
Well of course not, but not because of issues or fans but because of the shareholders. If the game would get delayed it would effect the confidence of the shareholders (which hold far more impact and importance than all the fans combined). This is business after all and if people investing in your product being made loose confidence CD RED are in big problems. Note that this doesn't mean that they doesn't care for the fans, however shareholders will always be a priority over potential customers at release. This is why patching is a thing, most developer can't afford continuous delaying the game and simply have to release it.
Do I trust CD RED to solve all issues?
Well of course not. First and foremost this is completely illogical. No company has ever managed to launch a game without issues (small or big) and of course these issues becomes larger and more common when we are talking about an open world game. Secondly I (while I love the franchise) never have had a good experience at the actual launch and this is known now (by at least a decent proportion of the community) for both previous games that it tends to not go completely silky smooth at launch and normally we have to wait for a patch that generally comes within the first week or so. I'll admit though this has mainly been because CD RED have had absolutely retarded DRM when initially launched (Yes this were a thing, don't forget it) on all versions except GoG, so if retailer doesn't push this shit again it will probably be better.
It's also worth mentioning that the issues being solved are (should be) targeting game play issues and not PC actual optimization. Now Witcher 2 never really fixed aspect ratios properly and the solution still took a couple of months or so after launch, and the game is still recognized to not be really forgiving on lower end PCs so it isn't really the best optimized game. It's not really surprising though if this did occur again with Witcher 3. Except the obvious "minimum and recommended hardware requirements", most interviewers have been rather bleak in actually cover PC related questions and CD RED haven't really talked much about it either (just the focus on how many pixels we can expect on each console).
So the conclusion is as following;
Is it smart to delay Witcher 3? No, not from a business standpoint.
Do I trust CD RED to solve most game play issues after a week or so after launch? Yes this I do.
Do I except CD RED to solve most PC related issues? Eventually, in one way or another.
And as a bonus, Am I bitter? No, not really, I'm actually quite placid.