UTL is about exploring past, present and future urban technologies in science and fiction, etc...
https://www.ctvnews.ca/vancouver/article/pie-in-the-sky-critics-question-surrey-mayors-plan-for-10000-seat-area/
A new arena in Surrey might not be an urgent concern today. However, whenever Surrey exceeds a million residents the arena project might be more appropriate. In the meantime, the best potential site should be set aside for when that time arrives.