To clarify, the hypocrisy lies in the fact that the Twitter 'internet activists' are supporting freedom for their kind and to protect their common ground (the Internet), while simultaneously lamenting that the freedoms of another coalition ('mouth-breathing, NRA-card-holding gun nuts') are not further imposed upon.
The Constitution in this case is irrelevant; rather, this boils down to the preservation of individual liberty, regardless of what your beliefs are regarding the 2nd or 4th Amendment rights.