This will make it easier to add any future mutually exclusive skill groups that are added in the future (if that ever happens again), but more importantly it prevents them from being counted against the total number of permable skills in a way that isn't just hardcoding skills.length - 2, making the bar for skills possible to fill completely instead of always having at least a little sliver of grey.
Tested locally with this URL, the skills bar appears completely full. Compare to live with this URL which has a little grey sliver at the end.
This will make it easier to add any future mutually exclusive skill groups that are added in the future (if that ever happens again), but more importantly it prevents them from being counted against the total number of permable skills in a way that isn't just hardcoding skills.length - 2, making the bar for skills possible to fill completely instead of always having at least a little sliver of grey.
Tested locally with this URL, the skills bar appears completely full. Compare to live with this URL which has a little grey sliver at the end.