If the past 4 years have been nothing but electronic music, I could see your point. But the matter of the fact is, that hasn't been the case for the past couple years.
While
Vaporwave (Correction, Synthwave. Thanks,
@GA-MBIT !) was the core of the park loops for 28 and 29, the core of 30's park loop was Industrial and Metal. And while there were some electronic touches here and there, they weren't the focus as the Metal and Industrial rang true. As for 31, the core of that loop was Rockabilly.
So two years straight of
Vaporwave Synthwave, and then two years of Metal and Rockabilly. Feels pretty alright for the park loop to go the way it is this year.