Interesting questions! Well, because androids are technically solid (unable to shapeshift), I'd figure the Changelings would distrust them (unless they acknowledge that the androids lack instinctual prejudices, which is what they seem to fear from "the solids"? But as others have noted above, the Changelings hold onto their own prejudices...).
I think Lore's obsolete comment stems from Lore wanting to be on the side of the most powerful (allying with the Crystalline Entity, the Borg...); I'd expect Lore would regard the Changelings to be powerful and would not think of them as "obsolete" (and how could something that can shift form become obsolete, anyway?
- Sifting TNG character quotes like no one has sifted before. Each post consists of quotes, rearranged by sentence, to produce a delight/disturbance (based on character and episode).