He's explained the thought process, like it or lump it. I don't really think the seats are that uncomfortable (there's more leg room than previously for a start) it's just the lack of room for squeezing by others that's the main issue. So long as they clean them regularly and don't let them get caked in bird shit that's about the best we can hope for.
They'll not be getting replaced again, the seats meet all the criteria needed to keep UEFA and all the other regulators happy so that's that.
One way or another the stand won't be there for much longer so they're not going to go throwing more good money after bad.