The webnovel of Mushoku Tensei is often more raw and unedited compared to the light novel. The light novel usually has better presentation in terms of grammar and layout. Also, the light novel might have some changes in the plot for better readability or to fit certain publication standards.
Well, the light novel often has more polished writing. It goes through an editorial process which refines the story. The webnovel might be more raw and unfiltered. Also, the light novel may have some exclusive content added by the publisher for a better selling point.
It's hard to say which one is more popular. The webnovel has its own charm for those who like to follow the story from its very origin and don't mind the less polished form. However, the light novel is more accessible to a broader audience, especially those who prefer a more refined reading experience. So, popularity can vary depending on different reader groups.
The light novel is generally more popular among a wider audience. It has better distribution channels, being available in bookstores and on major e - reading platforms. This makes it more accessible to casual readers.
Hard to say. It could be on hiatus, but without concrete information, it's difficult to give a definite answer. Try following the mangaka's social media or the manga's official website for the latest.