I'm sorry if it seems pedantic, but i don't like that situation.
First, the older Super tells basically the young one *HOW* to live his life, from start to practically finish. Add insult to injury that he also goes and tells him he hasn't enough spine to become Superman, and *WHEN* he is no longer needed he would be free to leave (Kind of blackmail: Become superman, so I can go home, and you can impress lois)
Two: How dares Herb to interfere purposely in the damn timeline!!! This is no small harmless endeavor. This is basically timeline sabotaging. This is no better than what tempus did, so the timeline turns how *HE* wants. For a greater good sure, but the methods are rather shady.
On the other part, I guess I'll kept reading, but Herb has some good explaining to do.