Yes you are correct. That pic was made for a different question a few years ago. I did have thoughts that maybe MVVS might have made one as a .10 or something for using in certain competition classes. They could use a more thick cylinder sleeve with a smaller piston. It might make for a high perf .10 engine or something. But the weight and size would likely be a disadvantage.  But I did see that ASP makes a .12 long stroke engine though that is big and heavy, so ASP copied it from someone somewhere that had done it previously.