In order that answerers can help comfortably, free from liability, and need not write a disclaimer anew every time, would it help to apply and ratify such a disclaimer in https://ell.stackexchange.com/a/39814/8712 universally to all questions on ELL?
(I removed the disclaimer from that post, which is recreated below):
Disclaimer: no part of this answer, my interpretation or my wording can be used as legally binding ground or argument in any past, current or future legal or paralegal action, whether said action includes promises or not. This disclaimer holds in all known and unknown universes, including but not limited to parallel, skewed and imaginary ones.
This particular disclaimer was added somewhat jokingly, but since you raise a serious question, I'll give a serious answer:
In short: No. Everything you post here is posted under the Creative Commons Attribution Share-Alike licence, which states:
5. Representations, Warranties and Disclaimer
UNLESS OTHERWISE MUTUALLY AGREED TO BY THE PARTIES IN WRITING, LICENSOR OFFERS THE WORK AS-IS AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND CONCERNING THE WORK, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTIBILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OF ABSENCE OF ERRORS, WHETHER OR NOT DISCOVERABLE. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO SUCH EXCLUSION MAY NOT APPLY TO YOU.
6. Limitation on Liability.
EXCEPT TO THE EXTENT REQUIRED BY APPLICABLE LAW, IN NO EVENT WILL LICENSOR BE LIABLE TO YOU ON ANY LEGAL THEORY FOR ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES ARISING OUT OF THIS LICENSE OR THE USE OF THE WORK, EVEN IF LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
You also waived your rights to assert other liability and warrantability claims on text you post to Stack-Exchange under Section 3 of the Stack Exchange Terms and Conditions:
You agree that all Subscriber Content that You contribute to the Network is perpetually and irrevocably licensed to Stack Exchange under the Creative Commons Attribution Share Alike license (...)
That means that not only is any user-added disclaimer unnecessary, it's also non-binding (i.e. pointless) - you waived your rights to assert other claims of liability and warrantability when you post here.
So if you see a pseduo-legal disclaimer on a post, please remove it, citing this meta.