(Replying to PARENT post)
That said, I've seen cases where the opposite is true. Parents are treated well but other groups aren't. I know several friends working at a large, well-known, evil gaming studio. They've had controversy in the past surrounding how they pushed employees to work insane crunch. When it became public, they (moderately) changed. Project managers would never ask women to work late, nor ask an employee who is a parent. For parents, this is great... however, they pushed all that work to others.
If you're male, single, a PM asks you to work overtime (without pay) and you decline, it will be a detriment to your career. After all, you have no kids therefore no legitimate reasons to say no. Be prepared to receive negative, nebulous feedback on your quarterly reviews.
"It doesn't feel like this employee is a team player."
"I question their commitment to the project."
"This employee seems dispassionate about their job."
I've worked with a project manager who carried a similar sentiment. In a candid conversation, he said to my face that he'd never ask women to work overtime. However, if you're male and under the age of 35, you should, "know better." If you're getting into the tech industry, you should expect to work at least 10hrs/day.
I'm very happy I don't work with him anymore.
(Replying to PARENT post)
Like outwardly complaining that a man is asking for paternity leave (or insinuating job consequences if they take more than a few days)? Or more subtle approaches like deliberately scheduling unimportant meetings at obscure times to interfere with parenting and childcare schedules?