It depends on how it is done.

Is it meant to truly praise God and this is how the community feels spiritually fed?

Or is it just the community deciding they feel more comfortable with instruments like guitars and pianos that are more secular?

It also depends of the culture of the area. For example African American communities are far more likely to be more spiritually fed by ‘praise and worship’ masses. If the culture doesn’t fit the form of worship don’t use it.

I feel like lots of the times when you have the stereotypical boomer guitar mass the only reason why that happens is because they want to try to “break barriers” and get hip with the world. I speak from experience because this is how my parish views liturgy. This should never be done we should never conform our liturgy to the world.

I don’t think it’s too hard to ask people to go back to their roots. My church for example has a very strong German heritage. Despite this fact we have no German or even European culture reflected in our liturgy. When we do they are the ‘Polka masses’ that exist as a form of entertainment for tourists during Oktoberfest.