Of course you have the right to make your choice, and your impression is what matters for that. The 8K doesn’t have higher image resolution, but it does have higher horizontal or vertical (not diagonal) gradient resolution, which for video material means it’s smoother. Essentially, that’s what the panel was made for; showing 4K video slightly better than 1080p. The dot distance difference between the two is minor (around 5%). For me, that doesn’t quite excuse that the scalers are only blurring it. The dots could have been directly addressed, and unless a mode is added that does so, the 5K+ will always be sharper. I’m also severely disappointed that the 8K’s panel has so few dots the comparison even could be close.
It’s easy to lose sight of the fact that softness isn’t purely negative. That’s why SD material frequently looks worse on a flat panel HD TV than it did on a CRT SD TV; it had the decay characteristics to make the interlacing and analog resolution work.