what program you use to make textures ?

You’re missing my point. The point is not that tedious things are now quick and easy through Quixel/Substance, that’s great, the point is that important technical knowledge about how textures and materials work is now missing because of the simplicity of the tools offering inexperienced artists a crutch to skip all that knowledge and still produce something that doesn’t look horrid.

I mean manipulate as in literal image manipulation. AKA, that thing Photoshop is built for.