Digital painting and traditional paintings are COMPLETELY different mediums. I can’t understand for the life of me people who act like they’re the same. Traditional painting is a 3D medium - you get light reflection off of various strokes and textures, and physical form built up from the paint itself. Because of this, traditional painting has many advantages over digital, as well as the limitation of needing to plan out your colors before you paint.
Digital painting is a truly 2-dimensional medium. You lose many of those textural components that would normally capture the eyes with actual paint. But the advantage of digital is that you can constantly change it, add infinite details, and create color profiles which are nearly impossible in traditional painting. So why not take advantage of what you’re working with? Tools like color dodge and color balance can often create subtle differences in color which are virtually impossible to create using paint.
The only thing to worry about in my mind is over-reliance on a tool. For instance, if you use the dodge/burn tools, they will create variations in color that might be way more dramatic than any object would actually have. So I personally avoid using these tools, but some people make use of them gently in backgrounds to create cool effects like camera flares or fire effects. I think the last time I used the dodge tool was when making a fireball for a dragon, and I ended up painting over most of it to tone FIRE down. xD And like Lunatique said, if you’re already using a specific color palette, any amount of photo editing tools can easily throw off your colors.
tldr; All good things in moderation.