I agree with the article IF you are buying just for investment. I invest to invest, my collector cars are my hobby. I have owner collector cars for 22 years and I have had the pleasure of owning 6 cars from the 20’s through the 60’s.
It is obvious to me, cars become valued when previous teenagers reach their 40’s and 50’s and usually have disposable income to buy the car they dreamed of at 18. Today, the 60’s are still strong, early 70’s and a few 80’s are beginning to drive a demand. My last car, a black 1968 Chevelle 396 got far more attention than my current, an amazing restored 1957 Chevy. The Chevelle, non numbers matching, worth approx $25K won far more trophies than the 57, worth approx $40K.
My advice it it’s your hobby, buy what you love, buy smart and spend smart. In my 6 cars over 22 years, I never made more than $4000 or lost more than $2000. I will not allow myself to get upside down. As I tell my buddies who golf and fish, how many hobbies can you get close to breaking even with and still enjoy.