S O N I C A D V E N T U R E

Because they decided to trim the fat that was holding the series back, and you think anything that is clearly unpolished is soulful regardless of whether it was good or bad.

No, the Egg Carrier crashing is entirely Sonic/Tails/Knuckles' fault. Sonic and Tails fuck up the left wing and Knuckles messes with the control stick.

The series still had soul in after the Adventure series, I believe it was after Unleashed when they just stopped caring, Generations was the last bastion of soul they had left before just saying fuck it.

Makes sense

Everything new in Generations was soulless it was just carried by the soul of older games.

Colors > everything else
I grew up with Adventures and I really couldn't stand most of it. Sonic's levels were decent but the controls and levels design were so subpar compared to the Genesis games I played before.