EDIT: Forgot to say that few earlier Nokia models had accelerated GPU but the OS and the developers didn't use those, so they just stopped adding the GPUs later on ;D
I had a similar experience working with another company. It was after the iPhone was available. But they still wanted to support a resistive screen in a high end product that wouldn't debut until years later.
I just couldn't believe the cognitive dissonance. Once the iPhone screen appeared, resistive screens were deader than Kurt Cobain. People in the trenches understood it clearly. But somehow top management either didn't get the memo or managed to rationalize it away.
While it's easy to find crappy resistive screens, and in such case capacitive ones clearly win, I definitely wouldn't replace N900's screen with one from iPhone - it'd feel like a downgrade for me.
I'd really miss that feature of the iPhone if it were taken away. Presumably the N900 has alternative ways of implementing equivalent features.
[1] https://www.starryhope.com/15-ways-nokias-n900-is-better-tha...