Does it look like a piano? Check!
Does it sound like a piano? Check!
As long as the basic principles of learning the piano remain unchanged, you can certainly learn to play the piano on a keyboard.
After all, every instrument, be it the keyboard or the piano, has its unique characteristics.
Also, are you constantly on the move?
Don’t have access to a traditional grand piano?
If this is the case, you should probably learn to play the piano on a keyboard.
Even if the authentic feeling of sitting and playing the traditional grand piano is missing, the innovation of the modern era has enabled us to learn the piano, regardless of our situation.
Here are a couple more questions related to this topic: