That and proof that Blur slows down the device. All I read are complaints that it is slow when it is simply an aggregate, not an app that resides on the O.S. If that was provided then the complaint would be validated.
The complaints are validated here by virtue of the fact that people have a right to their opinions without falling under attack.
I'm a Sense fan, but would feel well-served by Blur or modern TouchWiz.
That said, anyone running vanilla CM7 will attest that on any phone, vendor-integrated packages are by design a richer software stack - and take more resources to run.
So, the opinion is valid just because it's an opinion, and in this case, the facts are not in dispute.
That said, the issue for most people is that running a vendor-rich software stack, especially with the new features found in the Photon's version of Blur, is quite a treat and they can access those capabilities without the work and expense of add-ons, right out of the box.
The whole point of an advanced phone is to run as rich an environment as your heart desires.
You like Blur? Fabulous, many do. Please don't complain about people stating their contrary preferences. That's noise and this is Android, where choice is good.
Your free to send me a private message on any questions you have, there's no need to debate the issue here.