I feel more comfortable working with both laptop and mobile devices, but mobile is relatively portable and can be used anywhere. Laptops are best when doing a lot of typing. This forum link has a different feel for the users as there are no any hassles like adds.
This forum can only be convenient for use on a mobile device if we are only willing to read posts as you said and have no plan to make any posts because writing posts on a mobile device is a very big headache because you will need to keep zooming in and out when you are writing a post on a mobile device.
I also use it on mobile sometimes, but only if it's very urgent or something and I don't have the laptop around or maybe I'm somewhere out and can't have access to my laptop at that moment which is why I use the forum on mobile, otherwise, I absolutely hate using the forum on a mobile device. From the day I joined the forum till now, it has been a normal activity for me in my life to sit on the laptop and use the forum for a few hours.