I can understand the stance, I'm just saying that it's not something that I would ever describe as "marketable".
No one is saying "I've never used a gun" or "I've never pirated a movie" on their resume to market their morals. Resumes are to market the skills you have that match the job you're applying for, not for marketing your moral stance.
That's certainly interesting!
But I doubt those people put "never used Flash" on their general resume (or literally any other resume except the one tailored to that position, if they even put it on the resume instead of their cover letter). I also doubt they thought of it as a "marketable skill" considering it was applicable to ~1 job.
In any case, this seems like an incredibly niche situation that probably has no business being extrapolated to all AI tools.
A while ago I had to hire people who'd never used Flash (and therefore agreed to the EULA of Flash Player) for a project.