I could probably do a lot of things, but I am a very lazy person.
And I do not think this theme is so bad, I did worse lol
Just look at one of the themes I have created for one of my forum software.
Not Gosora, I like that one, but I think it was one of ABB.
As for the other terrible themes:
By 2015, I was writing C ++ programs and going in search of libraries. And all the sites looked like that.
I have a little more context to explain why they could do it because of the article above, but at the time, it was particularly weird like going back into the 90's. It's probably mainly cultural.
Edited to add a little more information and stay a little more on the subject lol