The forum by default operates on a desktop version and not a mobile so it will be better on the former but you can easily get used to either.
The new forum software should have a mobile version, so expect that for whenever that gets released.
While using your personal computer to text on the forum is very enjoyable, it is not as convenient as using a phone when you are stationary. Additionally, even though the forum is easier to see on a laptop, what will you do if you see the login on a TV using your computer?