The competing letter in support of RMS can be found here: https://rms-support-letter.github.io. The original letter denouncing RMS can be found here: https://rms-open-letter.github.io. At this point in time there are 5,871 signatories in support of RMS, and 3,012 signatories denouncing RMS. Not sure what that means, if anything, but it does lead me to conclude that RMS may not be the pariah of free software that he's made out to be.