[stcredzero]

50 year old programmer in the middle of an open office with 25 year olds bouncing balls around, playing loud music - bad culture fit.

Really? I'm almost 50 and I'm in an office with a bunch of 20-somethings who like to yo-yo. Music is only on headphones, though.

Female 25 year old in a group of 50 year old men who mostly wants to relax at work and are a bit awkward around young women - bad culture fit.

That's very dependent on the particular people involved. I've been in plenty of contexts where 40 and 50-something men could relax with a 25 year old woman. (Traditional music.) In times past, such a circumstance was pretty normal. People have ways of creating temporary spaces, both exclusive and inclusive. Letting this happen in ways that are positive is how larger gatherings and groups of people are supposed to work. It's where we've mucked about with that, albeit sometimes with the best intentions, where dysfunctions have crept in.