Concerned about out-of-sync hero careers in the DCU

So, I'm overall pleased with and excited about the DCU so far. Superman was the best live action adaptation of the character ever in my opinion and did a fantastic job with its side characters as well. Lanterns is looking great so far. Supergirl seems to have been a bit of a dud (I didn't watch it) but they can't all be perfect, and the casting seems good there at least.

But one thing that's been irking me since we got the early announcements of the projects in this Universe, which I haven't really seen much discussion about: the misalignment of the timelines of major characters' superhero careers.

You're telling me that Batman has already been through 3-4 Robins before the Justice League has formed? That he's what, 10-15 years ahead of Superman in the hero game? That's weird.

Hal Jordan's been Green Lantern since the 90s and is nearing the end of his career (potentially <!the end of his life, if that isn't a fakeout!> when Superman is just getting started? So he'll presumably never be a member of the Justice League? That's a shame.

This was something that always bugged me about how they did Ant-Man in the MCU, so it's a bit disappointing to see DC do the same thing when they have the opportunity for a fresh start. I'm especially annoyed about Batman, while I'm sure they have a great story idea for The Brave and The Bold, most general audiences aren't even aware of the overall story of the Bat Family and each Robin... it would have been nice to see that all play out across multiple films rather than starting with the 5th Robin. Especially next to a Year 5 Superman.

Curious to hear others' thoughts about this