The problem is that by creating the Veil Solas "lobotomized" everyone. And now only a few can be as they're all supposed to be (mages). That's why he feels guilty and killing himself won't do; he wants to restore the world to how it's supposed to be.
Indeed.
No matter what, his intentions are Pro (His People) Elf.
But I think he can be sympathetic to what has been done to Thedas on the larger scale.
We are/were 'meant' to be magical. He stopped that. Elves like Sera may be just fine with that, for example, but at the same time, we may be missing our full potential, stuck to making do with what we have here like Tevinter did, or reaching up for hope like the Chantry does.
For the record I haven't seen the convo itself, so correct me on anything wrong.