[CM30]

From what I can tell, the tech you'ved worked on tends not to be seen as a disqualifying factor for most job applications, so long as you also have experience in whatever tech stack the job you're applying for uses. And if it did, you have to ask yourself whether you'd want to work with such judgement assholes.

Nah, as people have said, the only real reason you'd want to leave it out is if you want to avoid being contacted about roles using a tech stack you don't want to use again.