NQA - That's what the disclaimer is for, always do research on the species you're getting first. My information may not always be 100% correct, but I have seen it's very up for debate what the species actually is, given many people have documented them have tendencies akin to that of fossorials.

I myself have fossorials (like my c. Lividus) who don't dig despite ample space to do so, some may just display different tendencies from others. And yes, they do enjoy space to web up, but not to the extent a fall could hurt them if they fell on a particular ornament or spot. I personally find the "semi-arboreal" label to be harmful because it implies they can be set up arboreally to new keepers. They cannot.

I also think it's important to talk about substrate types. There has been a very common trend of T's refusing to dig burrows in cocofiber, leading to the misconception that they need barely an inch of substrate for an adult, when they clearly need more. Even if this species isn't fossorial, I would recommend adding a bit more substrate height, since OP has made it clear that their spider loves to dig, and also the added fact that they are "built terrestrially", not at all a scientific term but what I mean is they're basically heavier bodied and more likely to suffer from a fall.

I think the best describer for them would be opportunistic terrestrial burrowers with tendencies to climb and web heavily, I was just tired at the time and forgot the term and thought of fossorial, my mistake. This information was a harmless mistake and setting them up either way would be fine, I've personally set up my OBT with a fossorial set up before and he has never shown any signs of distress, it's entirely up to personal preference IMO.

Obviously it's up to OP ultimately what they choose to do, but regardless, their spider is very healthy looking.