No, Superman would not have come on the series, anymore than he would have come on, say, The American Way,
We could easily spin this all off on the the Boys wiki. Some hiccups:
There was no The Boys Wiki yet. The url for theboys.fandom.com was taken by an unrelated, abandoned personal project. The Image Database had no content. Someone had to do it.
Even now the-boys.fandom.com exists, it primarily covers the tv show, not the comic.
It brings us quite a bit of traffic still so since it's technically sorta DC, removing it would not be in our best interest in terms of SEO.