Alot of the "altrighters" came from a bunch of young guys who voted for Obama for change and hated Bush and McCain. Were fine with gays being gay as it didn't spill into their lives. Hated that Wall St. got bailed out.
Then things got weird and media started overtly saying how all whites were evil and racist, it's better to be gay and let your kids join in, and the flip began.
I would agree, especially since I could have been described as center left growing up. However, I don't identify as "alt-right" due to being a Bible believing Christian. A single-line spectrum like left vs. right is laughably reductive compared to the hyper-dimensional reality that is human thought and philosophy. Not to mention, even IF you use spectrums to organize things, you'd want to be centered on every one so as to avoid overreaction and stick to the truth.