Think the takeaway was more about the "seediness" aspect of Hooters do to it's being pretty exceptional/unusual in American dining culture.
Hooters is a pretty unique restaurant experience in the US and is therefore considered different/further from the norm and frankly by many seedy. If there were more places like Hooters in the US then this would probably not be true.
The comment was trying to explain that in Japan you have a lot of places that would be analogous to Hooters in the US...so it's not exceptional/not seedy. Maybe not quite the "norm" but common enough to not be really something that gets noticed or have a connotation like "seedy".
Japan has (had?) an exact analog to Hooters, namely "sexy izakayas" like Hanako, where pretty girls in very short skirts serve mediocre bar food. These were pretty much obliterated by COVID though, and were always a small niche.
Unlike the US, Japan has a highly visible and de facto legal sex industry, so if anything sexy izakayas are/were at the less seedy end of the scale.
Hooters is a pretty unique restaurant experience in the US and is therefore considered different/further from the norm and frankly by many seedy. If there were more places like Hooters in the US then this would probably not be true.
The comment was trying to explain that in Japan you have a lot of places that would be analogous to Hooters in the US...so it's not exceptional/not seedy. Maybe not quite the "norm" but common enough to not be really something that gets noticed or have a connotation like "seedy".